Marvel TL;DR

Valentina "MacArthur" Escobar was a Total Drama Presents: The Ridonculous Race contestant and finalist as a member of The Police Cadets with Sanders.

Competitive and brash by nature, MacArthur plays the "bad cop" of the simplistic duo. She is not above abusing her power by breaking a few rules in order to win. She is known for being an aggressive person, as well as being a control freak; when she wants to get something done, she will complete it whatever the case may be. This ranges from commandeering a taxi from its driver to giving a ticket to Sanders for "excessive complaining" and passing gas right in front of her partner. MacArthur is proud of her physical skills and often teases her partner for being weaker than her.

None Down, Eighteen to Go - Part 1 (Episode 1)
MacArthur: "It's all in the glutes. I only use the stair machine at the gym. I'm basically 80% glutes at this point, it's taking over the rest of my muscles. [Flex her left arm]You see this... It's glutes. It's all glutes."