It's a beholder, it's a shoggoth, it's redundant!

Links:

• Deepspawn (Monstrous Manual) — Deepspawn look like large, rubbery spheres of mottled grey and brown. Six arms project from their bodies; three are tentacle-arms, and three are jaw-arms, ending in mouths of many teeth. A Deepspawn also has over 40 long, retractable, flexible eye stalks it extends only three or four at a time, well away from harm.