Does anyone know what this guy is? He’s the weirdest cactus I’ve seen! He was my first plant so he went through some trials of learning but the growth was about a year from the first picture to the last. I got him at a flea market that marketed him as a pettable cactus. He got sunburnt from being in too direct of light a few months ago but now the very end of him is bulging! He had a little cactus pop off of him that also had the bulge at the end but I have cut it off to propagate.