Moore is based off of the Fat Guy enemies, a variant of Shy Guys, from Super Mario World 2: Yoshi's Island. In the game they appear in, they came in two colors: red and green. The green Fat Guys would run around, while the red ones would walk, but run if they got jumped on. If Yoshi swallows one, he will get a giant egg, which can be used to KO all enemies on-screen.
Kirby Vs. Shy Guy
In Kirby Vs. Shy Guy, Moore plays the role as General Guy's sidekick. He is heavy weight and General Guy often commands him to perform tasks that the other Shy Guys couldn't noramlly do. One of the more notable tasks he does is sitting on switches to activate gimmicks and devices.
Though being General Guy's loyal and happy sidekick, Moore is often witty and lacks major knowledge. He gets hungry and is easily distracted.