Yep, another challenge from the HBO forums: this time we got to make up our own Flood form. Well, specifically a 'combat' form, though this thing is not really made for combat (unless you consider trying to eat you a form of combat). Not really 'based' on anything, though it evolved from my first thought of making a floodified dragon (which I didn't want to use cause there's no dragons in the Haloverse, officially XD).
Anyway, this thing goes around picking up body parts, small animals, etc (anything organic that can fit into it's mouth that is not plant life basically) that can't be made into a 'proper' combat form and converts them into infection forms, which it then barfs up to continue the infection. When attacked directly, it will fight back by spewing out infection forms and whipping at them with their tentacles. If it can, it will try to eat the attacker, piece by piece, if necessary. When defeated, it explodes into a shower of infection forms much like the carrier forms.