Spear Guy is a character in Mario Party Advance and a representative of the species of the same name. Spear Guy has the same appearance as his species.
In Mario Party Advance[]
Spear Guy is found in the Spear Thicket, where he wishes to challenge a character to a duel, but only if they have a mustache, otherwise Spear Guy deems them unworthy of being his opponent. As such, only Mario or Luigi can challenge Spear Guy to a duel, starting the Mustached Hero! quest, not Princess Peach or Yoshi. The duel takes place in the minigame Tank-Down, and the reward for winning is being allowed to keep the minigame.