My tribemate and me were walking in the blue biome (or how do you call it) we didnt have a lantern pet with us because we thought these creatures wouldnt spawn here, because we never encounterd them befor. We also had ravagers with us so we feeled pretty save. But then one of these things jumped out of a bush and attacked my tribemate i couldnt really see it so i thought it was a pegomastax, but he scremed:" OH SH** ITS NAMELESS" thirst we tried to kill it but more were coming. So we ran away screaming like little girls.
When about three spawn, one will turn into a alpha, ( large and orange) which are the ones that drop the venom. WARNING: When they drop the venom, a bag will drop with the venom inside, it won’t go into your or your tames inventory!!! If ten spawn, a reaper will appear. Keep a light pet with you so they don’t overwhelm you. Light pets will burn them, doing major damage. That’s really all you need to know to fight them!