Odd Squad/Total Drama

Agent Olive as Gwen

Agent Otto as Trent

Agent Olympia as Sierra

Agent Otis as Cody

Oscar as Chris

Oona as Izzy

Ms. O as Leshawna (both have dark skin)

Coach O as Chef Hatchet

Agent Ohlm as Noah

Agent Orchid as Courtney

Agent Owen as Owen (both share the same name)

Odd Todd as Duncan

Shapeshifter as Heather

Mr. Lightning as Alejandro

Oriele and Orielle as Katie and Sadie