Otto Osworth is one of the main characters in the cartoon series, Time Squad. Otto is a very smart child from the present time and knows much about history. One day he meets Larry 3000 and Buck and illigally joins their time squad to clean up weird things in the past.

Otto is a character in several fan fictions, having in different backgrounds of the character and so resulting in vastly different characters. Otto might refer to:

  • Otto (PPGDS): Otto, as he appears in the story, GrandMike's Powerpuff Girls.
  • Otto Osworth (Ω Universe): Otto, as he appears in the story, Powerpuff Girls Ω.