Throg is a Marvel Comics superhero who was originally a Central Park frog named Simon Walterson. When a sliver of Thor’s enchanted hammer, Mjolnir, landed near him, he was transformed into Throg with a fraction of Thor’s power. With his tiny hammer called Frogjolnir, Throg gained enhanced strength, durability, the ability to summon lightning bolts, and the power to communicate with other frogs.