From the Super Mario Wiki
Retrieved from "https://www.mariowiki.com/index.php?title=Gold_Lakitu&oldid=2596924"
Gold Lakitus are golden variants of Lakitus first seen in New Super Mario Bros. 2. After Mario or Luigi passes through a Gold Rings, the Lakitus in the level temporarily transform into Gold Lakitus. While in this state, rather than throw Spiny Eggs, the Lakitus will drop three coins at a time instead, similar to the Lakitus that spawn from Square Clouds in New Super Mario Bros. Wii. Additionally, if Mario or Luigi defeats a Gold Lakitu, they will earn 20 coins. They can then ride on its cloud, which generates coins as they move (while still in its golden state), similar to a Gold Block.
A Gold Lakitu also appears in Poochy & Yoshi's Woolly World in Gold Rush Mode of the Poochy Dash minigame, where it leaves behind a trail of golden Beads, which Poochy collects throughout the minigame, while moving towards the right at Poochy's speed.