Firebrand and Thunderhand
From the Super Mario Wiki, the Mario encyclopedia
Firebrand and Thunderhand are two beings (described as genies or guardian spirits) that appear in Mario & Luigi: Superstar Saga and its remake, Mario & Luigi: Superstar Saga + Bowser's Minions. They inhabit the Fire and Thunder Palaces, and are the masters of two respective types of Hand Power: the Firebrand and the Thunderhand. Firebrand teaches Mario the former technique, while Thunderhand teaches Luigi the latter technique.
Both Firebrand and Thunderhand wear white cloaks and are capable of floating in the air; they always appear in a flash of fire and thunder respectively. Firebrand's head is styled after a sun, while Thunderhand's head is shaped like a crescent. Firebrand is forgetful and easygoing, in contrast with Thunderhand's no-nonsense attitude.
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