It's that Grappling Grubb Mose! Armed with his drop-hook and razor-knife, Mose is a specialized combat Grubb known as a bait-man and he is one of the best. Grubbs were constantly under the attack of huge and lumbering Manglerfish (pictured here eviscerated). Manglerfish would show up and gobble down the poor Grubbs constantly so the Grubbs came up with an ingenious way of taking them down.
Requiring perfect timing, a bait-man will be lowered from the Grubbian towers on their drop hooks and have to be chomped by the Manglerfish WITHOUT hitting the teeth! Once in the gullet of those great beasts they take out their razor-knifes and carve their way out! Easy-peasy!
-jouste the drawbarian
Kratos would be proud.
Come to think of it, so would agent K in MIB.