Monmaasu

Monmaasu (モンマース, Monmāsu) is a planet where everything is ten times its normal size. The planet and the giant that live on it were designed by Akira Toriyama.

Overview
The planets is inhabited by giant humanoids, animals (hawks, goats), and insects (bees, beetles, butterflies). During Goku,Trunks and Pan's search for the Black Star Dragon Balls in Dragon Ball GT, one of the balls was located on this planet, the Four-Star ball, which ends up found stuck in the tooth of a giant.

The planet is shown again when the giant contributes to Goku's Universal Spirit Bomb to defeat Omega Shenron.

Video games
Monmaasu is the second level in the Game Boy Advance game Dragon Ball GT: Transformation. Enemies encountered here are Bees, Bumble Bees, Arachnids, the mini-boss is a Dragon Turtle, and the boss is the Giant with a Dragon Ball in his tooth (with the Toothache Giant's tooth being his weak spot).