Otto Mentallis

Otto Mentallis is a supporting character in Psychonauts 2. An inventor as well as a founding member of the Psychonauts, he pioneered psychoreactive technology and spearheaded the creation of the Motherlobe.

Major Relationships
Ford Cruller

Sasha Nein

Razputin Aquato

Behind the Scenes
Otto Mentallis is voiced by Piotr Michael, who voiced numerous minor characters in Psychonauts 2, including the Tooth Fairy in Loboto's Labyrinth, the Hippo Pot in Compton's Cookoff, and the Propagandeer in Fatherland Follies.

Trivia

 * A wood-carved portrait of Otto is found by the campfire in the original Psychonauts, along with the rest of the Psychic 7.
 * Otto is the only member of the Psychic 7 whose mind is not visited in Psychonauts 2.
 * Otto is present via a figment in Helmut's recollection of the Fullbear/Zanotto wedding, but is absent from Bob's.