Doctor Octogonapus (blaaaargh)

I want to make a SWep where you you fire and Dr Octogonapus appears, goes through his motions and then blarghs all over your target.
To this end, I need a solid prop_dynamic style Dr Octogonopus with an animation for the whole waving of tentacles and mouth going up and down.
A player-rigged ragdoll with jiggly bones would probably be appreciated too. :3:
Thanks for reading.

That’s quite a big project.