Mr. Plantegg is a minor NPC in the indie RPG game OMORI. He is a quirky, anthropomorphic egg with a plant sprouting from his shell, found in the Otherworld. Mr. Plantegg is known for his gentle demeanor and provides the player with a side quest involving locating his lost children, the Plant Eggs. While not central to the story, he adds a whimsical charm to the world of OMORI and illustrates the game's unique blend of humor and surrealism.