Baby brains are small, immature brains that spawn in Brain biomes. They spawn as either flying baby brains or crawling baby brains.
Even though they are small, baby brains are well-armed with electrical weaponry, and are surprisingly difficult to kill.
Note: despite their cuteness, it is not recommended to hug the baby brains.
Baby brains were originally intended to be coded so that unlike their adult counterparts, they couldn't fly, but would crawl along the ground and walls much like a Terrapus.