Poo (Japanese:プー) is a fictional character in the video game EarthBound and is one of the four major characters in the game.

Poo is the prince of the kingdom of Dalaam. He has undergone strict martial arts training, and has a special diet. In EarthBound, that means he can't eat any western-style foods, such as hamburgers or pizza. Very late in the game, he learns one of the most powerful PSI attacks: the Starstorm. He also has a mirror ability, which allows him to copy any enemy in the game during battles. However, it misses most of the time. He also has high speed, but he is not as fast as his ally Paula is in battle.

Poo cannot use any weapons except his fists and one special, hard to find item, the Sword Of Kings. This can be found by defeating a Starman Super under Stonehenge in Winters. There is a 1 in 128 chance in getting the Sword. Poo also has abnormally high defense and attack even without the Sword of Kings, although people debate he is still weak in the early parts of the game that he appears in without it.

You can obtain a trophy of this character in Super Smash Bros. Melee.