Piglins are neutral creatures found in the Nether. They attack players unless they are equipped with a piece of golden armor. Players can use gold bars to exchange them for various items.

Piglins appear in groups of 4 in abyssal and crimson forests, and inside ruined fortresses, at a light level of 11 or less in Java Edition, or 7 or less in Bedrock Edition in most non-blocks. lower warts block, even in peaceful mode. ‌ [Bedrock Edition only] Each piglin has a 20 %% [Java Edition only] or 5% ‌ [Bedrock Edition only] chance of appearing like a baby.

Information: https://minecraft.fandom.com/wiki/Piglin