Gentleman Spider is a character that appeared in the episode “Earth & Water” listening to the rantings of Flame Princess after she had been lied to by Finn. After she gets a little too emotional, she causes a sudden surge in temperature, causing the spider to flee. After he fled, he landed on the invisible Princess Bubblegum, who after punching him away, revealed to have been spying.
Gentleman spider had a Spider body with a hat, pants, and a pair of shoes.
- Gentleman Spider could be considered to be a "Forest inhabitant."