The Devil Frog is the main antagonist of the episode Devil Kirby. He is the reason why Kirby turns traitor in the episode and becomes Devil Kirby. The Devil Frog takes his design from a normal frog, but has a star above his nose, and orange eyes. Tiff, Tuff, and Meta Knight exorcise the Devil Frog, but King Dedede attaches the frog to the back of his own head, turning into Buff Dedede. The Devil Frog dies when the Heavy Anaconda eats him and King Dedede.
- Devil Kirby makes a cameo in Kirby Star Allies if you go to the boss rush and pick the eighth level, Soul Melter.