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Peter Lancelot Cook is Taranee's older brother, the son of Theresa and Lionel Cook. Peter currently attends a college and lives away from home with three of his friends in a small apartment.


Peter is a very easygoing guy that doesn't let much upset him and always tries to see the brighter side of things. He is very perceptive of others' feelings and tries to cheer them up if he senses that they're down.[citation needed]

He is fiercely protective of his loved ones and would do anything for them. If they needed a shoulder to cry on, an ear to listen or whatever else, he is always there. He is very dependable and would drop everything and come to a loved one's side if they needed him, something he would do even if they hadn't asked. Something which he did for Taranee.[1]



Early life

Peter was born to Theresa and Lionel Cook. A few years later, his parents adopted his younger sister, Taranee. He was not aware of this fact until over a decade later.[1] Before moving to Heatherfield, they lived in a town called Sesamo filled with mountains.[2] During the summers in Sesamo, Peter would teach Taranee how to ski.[3]

Move to Heatherfield

Peter was very excited to move to Heatherfield as he would get to experience the town's surf, something he could never try in his hometown of Sesamo.[2] When he arrived, he met a girl named Irene. Peter enjoyed hanging out with her and they dated for a while. The pair broke up, however, and they eventually lost contact with each other.[4]


At the inauguration for the School Olympics, Peter and Cornelia walked through the festival, hand in hand, and discussed Taranee's participation in the festival.[citation needed]

Heatherfield citizens gathered at the beach to watch a solar eclipse. During the solar eclipse, Heatherfield was exposed to some of Kandrakar's power, allowing the wishes of everyone to be granted. Peter's (and Cornelia's) wish came true when Cornelia enthusiastically asked him out, which he agreed to. Unfortunately, he forgot all about it when Heatherfield was returned to normal.[5]

The next day, during school, Peter approached Cornelia while she was making photocopies. He then used the photocopier to print a note. When Cornelia went to pick it up, she noticed it was actually an invitation to go on a pizza date with him and she happily agreed.[5]

Peter took Cornelia to Karmilla's one-night-only concert, but the date was nothing but awkward and silent. As Peter was about to confess his feelings to Cornelia, he, along with everyone else attending the concert, was unwittingly attacked by Folkner and his Ragorlangs. Unbeknownst to everyone though, the girls were able stop Folkner.[6]

After being freed from the Ragorlang's grasp, he tried to talk to Cornelia, but she had other thoughts. Cornelia grabbed his shirt and pulled him into a kiss, which he happily reciprocated.[6] The pair then began to date each other.

Moving out

Peter started looking for and found a small two bedroom apartment with three of his friends; Stan, Roger and Richard. Peter withheld the information for several months, waiting for the right time to announce it, but wasn't ready to break the news to his mom yet, so he confided in his little sister instead. Unbeknownst to him though, his mother was listening to everything outside his door. She entered his room and they talked about him moving out.[7]

Over the following days, Peter packed his stuff in boxes and received help from several people, including Taranee and Cornelia. Taranee made it known to him that she would miss him, and he jessed that he wasn't going to move out so quickly.[citation needed]

Last days at home

Peter spent his last days at home packing, cleaning his room and hanging out with his girlfriend. Since Taranee had gone away to camp, he had Cornelia come over to help. As Peter did work, Cornelia looked through his old photos and found one of his past girlfriends, Irene, but he assured her that that relationship ended a long time ago.[4]

Later on, Peter met Cornelia at the movie theater for a date. He quickly noticed that Cornelia was feeling down, and he reassured her that things with Irene were long over. Cornelia then mentioned that she was reminded of her first love, Caleb, but reassured Peter that she loved him. Hearing her words, Peter dragged her to the photobooth for them to take pictures and remember that moment.[4]

On the last day of vacation, Peter and Cornelia had a date on a rooftop, stargazing. They laid out blankets to sit on and watched the stars go by, with soda drinks on the side.[4] Peter then moved out over the following days.

Living with friends

As soon as the four boys moved in, they created a pigsty in their home. Clothes, dirty laundry, and food was strewn about their floors and walls. The boys, however, didn't seem to care much.[citation needed]

Peter kept in touch with Cornelia with hand-written letters, even though both of them had computers and cellphones, as they deemed it romantic. He would constantly brag about his girlfriend to his roommates.[citation needed]

News about Taranee

Shortly after settling in, he received a call from his father about Taranee and her discovery of the fact that she was adopted. The news came as a surprise to Peter and he rushed back home to be by Taranee's side. He confirmed to her that, blood or no blood, they would always be siblings.[1] As soon as the dust settled, Peter went back to his apartment.

College life

Peter went on a vacation with his family, friends, and girlfriend. While teaching Cornelia how to surf, a gust of wind blew them off their board. Peter saved Cornelia from being pulled under. Later, Peter performed a set on stage with Cobalt Blue.[8] After the holiday was over, he went back to his apartment.

Peter spent the summer with his friends and family. At the end of summer, Peter, Matt, and Stephen planned a night to watch the stars, on the beach, with the girls. Peter picked up supplies alongside his sister and Hay Lin, but he got carried away with the decorations and furniture, resulting in him being chastised by Taranee. Later, as he was preparing to leave for the beach, he found that his tires had melted into the road (thanks to Taranee). Despite having to throw his original plans out the window, he still enjoyed the stars with his friends while cuddling with his girlfriend.[9]

TV series

Peter met Cornelia whilst he was playing basketball. Cornelia was clearly attracted to him though he did not seem to notice her. Later in the episode Cornelia came back from Meridian but still appeared noticeably older and taller (in Guardian form without her uniform, wings, and powers). Peter recognised Cornelia but couldn't figure out where he knew her from. Thinking on her feet, Taranee told Peter that this was Cornelia's older sister Lilian. Though Peter was confused, swearing that Cornelia had a younger sister called Lilian, he was clearly attracted to this version of Cornelia and crashed into a pole in his daze.[10]

The rest of the Guardians found out that Cornelia (in her Lilian form) and Peter had been dating since they first met in the park. Taranee was not very excited about their relationship. Peter took Cornelia to the ice rink on a date where they ran into Caleb. Through a combination of Taranee creating a train of people and Irma and Cornelia's powers, Peter was distracted from Cornelia switching between her forms and even met the real Lilian. When Cornelia realised she wanted to be with Caleb, she went to break up with Peter, only for him to kiss her with Caleb watching. Cornelia was then called away to Meridian due to Julian's disappearance. After making up with Caleb, Cornelia returned to Earth and broke up with Peter on the ice. Taranee approached her older brother to comfort him, saying he looked like he ‘was bumming’. Peter clarified that it was an act and that he was going to break up with her anyway because she was too serious and we’ve all gotta find something real.

Peter was briefly seen hiking with his family on vacation when Taranee was tele-transported by Yan Lin and Cornelia.[11]

Peter also briefly appeared playing basketball alone at night when Shagon used his optic beam to blow up the basketball before flying away. Taranee was furious that Shagon would target her brother, fueling her anger toward him.[12]



Peter loves his little sister, Taranee, and would do anything for her. They have a strong brother-sister bond and get along really well. He is known to be protective of her and likes to see that she is happy.[citation needed]


Peter took an instant liking to Cornelia when he saw a distorted image of her.[10]



This list is incomplete.

TV series

Season Two


  • Peter is the only non-Meridian involved older sibling, though in the comics we learn some other non-Meridan involved characters have older siblings.
  • Despite being several years older than Taranee, he didn't realize that she was adopted until she found out years later.[1] How he missed the fact that his mom never had a baby bump is beyond explanation; potentially his parents lost a baby, which resulted in them seeking to adopt, although this was not explicitly stated.
  • Peter has more appearances in the comics than the TV series and his relationship with Cornelia actually goes ahead and is a lot more detailed, though in the TV series he ends their relationship after only dating a short time and he thought he was dating Cornelia's "older sister" Lilian.
  • In the comics Peter is more involved with his sister than in the TV series, giving her relationship advice, being there for her after he found out Taranee was adopted and being a caring brother.[1]
  • Peter's name is derived from the Greek Petros meaning "stone".[13] Highly appropriate since his girlfriend is the Guardian of Earth.
    • More than that, the name Cornelia is the feminine form of Cornelius.[14] In the New Testaments, Cornelius is a centurion who is directed by an angel to seek a man named Peter.[15]



Images of Peter Cook from the comics.

TV series

Images of Peter Cook from the TV series.