Tyler Down is a main character in 13 Reasons Why. He is the subject of tape 4, where he was responsible for stalking Hannah and spreading her and Courtney's kiss photo over the school. He is portrayed by Devin Druid.
In the flashback, he would always stand outside Hannah Baker's window taking pictures. On the day that Courtney offers to help Hannah catch the stalker, he snapped a picture of them drunk and making out. However, Hannah killed two birds with one stone and Tyler's identity was exposed. The next day, he was confronted by Hannah and he supposedly gave her the pictures of dispose. When he asks if she wanted to hang out and she said no, an angry Tyler group-sent the picture to the whole school. To present time, everyone still had a copy of the picture on their computers.
In present time, Tyler can be seen inside his house. His windows have some visible damage to it, and his dad asked him what was going on. He proceeds to say that he didn't know anything and was left alone. At school, he was confronted by Clay about the pictures and Tyler revealed that Tyler was in love with Hannah, and the fact that she didn't try to hide who she was. After Clay said that he wanted the pictures destroyed, Tyler him a picture of Clay and Hannah together, for his keeping. Later, a naked picture of Tyler was sent to the whole school by Clay, as a payback for what he did to Hannah.
Olivia Baker is the mother of the late Hannah Baker and the wife of Andy Baker. She is portrayed by Kate Walsh.
She is first introduced along with her husband, Andy. They arrived at Liberty High School to pick up the rest of their daughter's belongings, in hope of finding something to help them win the lawsuit against the school.
She finds some incriminating evidence that could solidify their lawsuit: the "hot list" Alex made. However, Andy isn't sure that this will help them. Olivia doesn't care as she needs to find a reason that explains why her daughter killed herself.
Olivia arrives once again at Liberty High and goes to the principal and asks if he noticed anything different about Hannah, how she acted in school. Since she's brought a lawsuit against the school, the principal can't lawfully talk to her. Olivia goes into the girl's bathroom and finds graffiti about Hannah. Not only about Hannah, but the entire wall of the bathroom is covered with insulting comments about other girls. She comes to the conclusion that Hannah was being bullied and that's all the evidence she needs.
She catches Clay Jensen as the culprit for toilet papering her house, but it turned out that he was just trying to help. When she learns that he was an old friend and co-worker to Hannah, she invites her into the house. Olivia tries to pressure him into helping them find out why Hannah killed herself. When the Baker's store is losing customers, Olivia is sure it's because of Hannah, and people are scared of them.
While out to dinner, they talk to a woman about Hannah as if she is still alive. She tells the mother that Hannah is 17, is going to start applying for colleges soon, that time flies. Her mother tells her father that it is nice to sometimes not be the mother of the dead girl. He suggests moving, but Olivia doesn't think it would help.
Olivia finds the list with all the names of the people on the tapes, although she doesn't know what the list means.
Marcus Cole is a character in 13 Reasons Why. He is the subject of tape 6, where he is responsible for humiliating Hannah Baker in public on their One Dollar Valentine's date. He is portrayed by Steven Silver.
In the flashback, Marcus supposedly got Hannah Baker for his #1 for the Dollar Valentine event. He proceeds to ask her out on a date at Rosie's, and she said she'd think about it. She made up her mind and said yes, but didn't realize that Marcus is using her because she is "easy". Marcus then shows up an hour late and drinks out of her milkshake. He moves to sit in the same side as Hannah, but only to make a move on her. He then got pushed onto the floor, then leaves with the guys he came with in the end.
