Wrench a Battle Pet Cage with a pet inside, and you can use this to resequence their DNA. It will rotate the order of their 3 powers, so that their 1st gene-spliced ability becomes their natural ability, and thus their appearance.
Genetic Resequencer price in Growtopia: buyers pay about 45 WL (median of 5 offers from community Discords, past 30 days). Live price chart and the latest buy and sell offers.