Jack is an NPC in Oh So Hero!

Initially, Jack's interaction is a short talk about the blockage problem, he expresses his wish to just take a break as he's working to fix it. Upon progressing enough through the story and reaching the Smol Beach the long way around, he says the problem was fixed and the player can now engage in a sex scene with him.

He is a ring-tailed lemur with white fur and dark grey markings around his tail and face. he has a red rhombus shaped marking on his chest. His outfit is a simple pair of black coveralls, indicating that he is a mechanic.

Jack stands by Smol Beach's entrance on the Sheo Islands Beach to inform bystanders about the news van blocking the passage.

With version version 0.18.500, Jack gained a second part to his scenes with Joe and the functionality to unlock the Smol Beach shortcut, subsequently changing his dialogue, was added.

• Jack's name is related to the tool of the same name.
• Jack is the fourth character to have their sex scene retroactively added on to after Ket, Domino, and Liath.
• Jack along with Ket, Brask, K.Ren, and Joe are the only characters that have full body CGs instead of just sprites in their dialogue.
• Jack is currently the only character in the game who's dialogue changes as the story progresses.His dialogue changes after the player reaches the Smol Beach and the shortcut to it is unlocked.
• Jack is one of the few NPCs to be in both Submissive and Dominant positions in his scenes with Joe. The others being Tiburon, Liath, Jaer, and Bryce.