Little is known about Male Tree Trunks, but in the theme song in the episode "Fionna and Cake," he is shown briefly in the Candy Kingdom.
Tree Trunks With Mustache & Bow Tie is seen with a gray mustache and a green, see-through visor. He also has a few wrinkles on his trunk. This may imply that he is also old, like his female counterpart. He also wears a bright blue ribbon on his tail. He has thicker eyebrows than Tree Trunks.