From the Super Mario Wiki
A Thunder Lakitu is a Lakitu that shoots out a ball of energy, setting the ground on fire. They make their first appearance in Super Mario World 2: Yoshi's Island in the level, BLIZZARD!!!. These sun-burnt Lakitus make a loud noise and the screen flashes when they attack, so the player can detect when they are about to attack. Thunder Lakitus reappear in Yoshi's New Island, where they are only found in the level Bandit Valley.
In Mario Power Tennis, the Thunder Lakitu has a major appearance in the DK Jungle Court. They are able to clear the field from Klaptraps, by burning them with lightning bolts in the gimmick courts mode. Here, their skin is that of a normal Lakitu.
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