* Mia's ex-boyfriend.
* Father of Grace.
* October 15, 2009, Chad's name was changed from Chad Peterson to Chad Peterson Woods.
* DA Woods is his father.
* Kate and Madeline Woods Peterson were prostitutes together.
* Chad's mother died and his father left town after.
* Turns out Stefano DiMera is his father with Madeline Woods.
* Changed his last name to DiMera only to work at Cheatin' Heart. (His birth certificate names him a year older than he thought he was.)
* Chad celebrated his new birthday March 3, which is the date on his birth certificate.
* Dated Abigail Deveraux, and is then her best friend, Melanie Jonas.
* Proposed marriage to Melanie, who turned him down.
* Dated Abigail Deveraux.
* Left town and moved to Chicago.
* Returned to Salem in September 2014 bent on revenge against EJ and Abigail for sleeping together.
* Stole control of DiMera Enterprises from EJ.
* Sparred with Abigail’s boyfriend Ben Rogers.
* Made love with Abby while she was with Ben.
* Did not know Abigail’s baby with Ben was really his.
* Dated magazine editor Zoe Browning.
* Thought Andre was responsible for killing their father Stefano.
* Was framed by serial killer Ben for murdering multiple Salemites.
* Saved Abigail from Ben when he tried to murder her.
* Was brainwashed by Andre to romance Belle Black in order to regain family money.
* Learned Abigail’s baby was his and snapped out of the brainwashing.
* Married Abigail March 15, 2016.
* Worked with Abigail and JJ to trap Ben after he escaped from the hospital.
* When Abigail faked her death, he moved on with Gabi.
* Abigail returned and Chad was torn between two women.
* Abigail stepped aside because she wanted Chad's whole heart and didn't think he could give her that.
* Chad and Gabi made love while castaways on a Greek island after their plane crashed June 2017.
* Renewed vows with Abigail.

Billy Flynn (September 12, 2014 - February 21, 2019)
Casey Deidrick (June 18, 2009 - October 30, 2013)

Chad showed up at Java Cafe, where Mia was working. She was shocked to see him. Chad doesn't know Mia had his baby. Neither of them know that the child is not Sydney, like Mia thinks, but little Grace, who passed away from bacterial meningitis. As his portrayer has stated, "Chad Peterson has trouble written all over him, yet I believe he means well. There's a part of him that you hate, and love at the same time. He's a very confident, edgy, mysterious person. He's the type of person that can persuade you by his words. It's tough to break him, it seems like he's seen and been through a lot in the past...maybe a rough history with his parents, or abandonment issues. He will definitely bring out a side of Mia (Taylor Spreitler) that no one has ever seen before. The love triangle between Will/Mia/Chad is getting intense."

Chad has been marking his territory around Mia and is at odds with Will, who is close with Mia. Chad has found out that Mia went to rehab while he was away, but knowing her as he does, he doesn't believe it and wonders what she's hiding. When he tried to find the truth out, Nicole beat him to it and threatened him and his family. Chad eventually learned that Grace was his child but it wasn't until after she died.

When Will learned Chad's mother was a prostitute, he told Chad about it and Chad confronted his mother at the pier. She was trying to discuss it with him when he shook her hand off of him. She promptly fell down the stairs and died. Lexi discovered she would have died anyway because her death stemmed from an aneurysm not the fall. Chad's father blamed his son anyway and left town for work. Chad's in Salem alone now and Kate has learned from Madeline that Chad's father is really not the DA but Stefano DiMera. Kate's trying to get him a job at DiMera industries as an intern but he turned it down. Recently, Kate sent him his birth certificate so he could decide what to do with this knowledge that Stefano's his dad. Chad received the certificate and went to Stefano with the news. A DNA test confirmed that they're father and son and while Stefano wants his son to move into the manse and accept money to pay for school, Chad has turned his back on the family. It took him a while to come to grips with this news and when he did he eventually moved into the mansion, where he now resides and has grown to love Stefano.

Chad began dating Abigail Deveraux and enrolled in Salem University where he also worked on an online business venture with Will Horton and Sonny Kiriakis. During Halloween, Chad accidentally kissed Melanie Jonas as she was dressed in the same Halloween costume as Abby. Abby caught them kissing, but they both insisted it was an innocent mistake. Later, hackers got hold of Chad and Will’s site so they shut it down. The hackers ended up kidnapping Melanie and Chad, who had developed feelings for each other but stayed quiet because of Abby. While they were held captive, Melanie and Chad admitted their feelings and shared another steamy kiss, thinking that they weren’t going to make it. They were eventually saved but kept their feelings a secret. Chad and Abby later decided to break up because things didn’t feel right anymore. Meanwhile, Abby actually broke up with Chad because she had feelings for Austin Reed. Chad and Melanie ended up kissing again and Abby caught them. Though she was angry about it, she eventually forgave both of them and gave them her blessing to start a relationship.

Chad continued to pursue Melanie. They wound up dating and were happy for a time until Gabi faked having a stalker in order to get Chad's attention. Gabi did what she could to try breaking Chad and Mel up but finally succeeded when she learned that the guy she hired to be her stalker, Andrew, had kidnapped Melanie, unknowingly. Gabi didn't like it and tried to save Melanie but Andrew blackmailed her into silence. Chad learned the truth when Melanie was found and kept quiet for Gabi's sake since she and Melanie were friends. When Melanie learned the truth, she left Chad and moved to Europe to be with her mother Carly and Chad moved on. He and Sonny opened a cafe, and he beat up Nick Fallon when he got out of prison - over how he loathed Gabi for what she did. When Chad beat him over his bitterness toward Gabi for allowing Melanie to be kidnapped by Andrew, each was in danger of going to jail. They decided to keep it quiet with the help of Justin, who drew up documents stating if either mentioned it, Nick could go back to prison because he was still a parolee and Chad could wind up in jail for battery.

Chad learned that Gabi was pregnant with someone other than Nick's child and outed her at their wedding. He ruined his chances at a possible reunion with Abigail and harmed his friendship with Will and Sonny when it was learned that Will was the baby daddy and hiding the truth. Chad felt awful and apologized, Will forgave him but he and Abby were through. He sought support from EJ and Kristen, his siblings. They helped him get through and he moved into the DiMera mansion but during Sami and EJ's wedding engagement, he was shot and wound up in the hospital. He was taken to Chicago for rehab and decided to stay there.

He returned to Salem September 12, 2014 after Sami Brady sent him an article that Will Horton wrote naming Abigail Deveraux, Chad's ex, as his brother EJ’s mistress. He was bent on revenge and worked with Stefano to take DiMera Enterprises from EJ, but also worked with Kate Roberts to double-cross Stefano. When EJ was killed a few weeks later Chad felt badly about how acrimonious they had left things.

Despite his anger Chad still had feelings for Abigail and it caused immediate friction with her new boyfriend Ben Rogers, a bartender at the club he co-owned with Sonny, and it eventually came to blows between the two. Chad got Abigail her job back at the hospital after Sami had her fired, and he took over EJ’s spot on the board. As the two began spending more time together at work, Abigail moved in with an increasingly-jealous Ben.

One night Abigail came to deliver some papers to Chad and they made love in the garden of the DiMera mansion. She refused to leave Ben for Chad though and when Chad learned Stefano was plotting to get him and Abigail together in order to gain control of land she was set to inherit in Ireland, Chad treated her like garbage in order to keep her safe and away from him. He tried to move on with Zoe Browning, Will’s editor, but his heart was still with Abigail.

Clyde Weston had planted a bug in the DiMera mansion and learned about the land in Ireland. He made sure to switch Abigail’s pregnancy results when she was trying to determine if the baby she was carrying was really Ben’s or Chad’s. Chad was the father but it would be a while before he or Abby knew the truth. Instead, Abigail agreed to marry Ben and put Chad in her past. Chad told her to whole truth about Stefano’s plot and agreed to back off while she built a life with Ben and their baby.

Stefano threw Chad out for betraying the family and he went to Club TBD to get drunk. He found a partner that night in Serena Mason and after a few drinks they began to make out. When she tried to stop Chad didn’t and she slapped him and left. The next morning Chad woke up in his hotel room with no memory, and Serena was dead. Unknown to anyone in Salem, Ben had begun a murder spree in order to frame Chad and for months it worked. Each person that was found dead was traced back to Chad and he was arrested.

Meanwhile, Ben took Abigail out of town and held her hostage in a cabin where she delivered her baby early. Chad had escaped and arrived at the cabin just in time to save Abby, but Ben locked them up in the cabin, lit it on fire and left with the baby. Eventually Chad and Abigail were reunited with the baby Ben had named Colin, and Ben was sent to a mental hospital.

Abigail and Chad’s relationship progressed quickly after the baby was born, but hit a snag when Chad’s brother Andre brainwashed him to go after Belle Brady for some money Sami had embezzled from the family. Abby was persistent in getting the Chad she knew and loved back. After her baby had a health scare she learned Chad was actually the baby’s father, and it was that news that finally broke Chad free from his brother’s brainwashing. Together they renamed the baby Thomas Jack and began to plan their wedding.

When Stefano went missing Andre tried to convince Chad that their father had been murdered by Hope Brady. Chad couldn’t believe Hope would have anything to do with something so dirty and worked with the police to put Andre away for the crime. Now alone, Chad insisted he and Abigail move into the mansion. She was not happy about it but agreed for Chad’s sake.

As the date drew near for Abigail’s wedding to Chad, news broke that Ben had escaped and it set Abigail into a spiral of paranoia. Chad and Abigail got married on March 15, 2016 and after a short and stress-filled honeymoon they returned to the mansion to set a trap with her brother JJ to catch Ben. Abigail soon became convinced she had lost her mind and did not tell Chad when she thought Ben had visited her. Even when Ben was with her for real she kept Chad in the dark and out of the mansion while she tried to exact revenge herself by setting Ben on fire. Abigail was committed to Bayview Sanitarium. She ran away and faked her own death. Chad moved on with Gabi Hernandez until Abigail showed that she was still alive. It was hard on him and he gave up Gabi for Abby. Abigail was still very ill and thought Gabi belonged with Chad. She left him and married Dario who told her he needed to get married so he wasn't deported to Mexico. She learned Dario was lying and tried to leave him but he threatened Chad, saying he thought Chad killed Deimos. He showed Abby a photo of Chad standing over the body but Abby had Theo delete it, then she left Dario. He took off and she got back together with Chad. They married October 2, 2017 but not before Ben Weston interrupted their vows to tell them all that Will was alive.

Belle Black Kiriakis Brady (flirted, kissed while brainwashed)
Serena Mason (kissed)
Zoe Browning (kissed)
Jordan Ridgeway (dated, lovers)
Melanie Layton Kiriakis Jonas (dated, lovers, engaged)
Abigail Deveraux Weston DiMera (dated, lovers)
Gabriella Hernandez Fallon (dated in 2016, then again 2017)
Mia McCormick (lovers)

Stefano DiMera (biological father, deceased)
Madison Peterson-Woods (biological mother, deceased)
Charles Woods (adoptive father)
Santo DiMera (grandfather, deceased)
Andre DiMera (half-brother)
Renee DuMonde (half-sister, deceased)
Megan Hathaway (half-sister, deceased)
Kristen Blake Black DiMera (adopted half-sister, deceased)
Peter Black (adopted half-brother)
Lexi Brooks Carver (half-sister, deceased)
Benjy Hawk (half-brother, deceased)
EJ DiMera (half-brother, deceased)
Theo Carver (half-nephew)
Johnny DiMera (half-nephew)
Sydney DiMera (half-niece)
Steven Hawk (half-nephew)

Grace Brady (deceased child with Mia McCormick)
Thomas Jack DiMera (son with Abigail Deveraux Weston DiMera)
Charlotte DiMera (Wednesday November 14, 2018. With Abigail DiMera though he thinks the baby is Stefan DiMera's)