A somewhat sentient Metal Scorpion with a spear for a stinger that latches onto the forearm of a host.

Grapple: As an action you may fire this spike at a creature or object within 30ft. If your target an object not being worn or carried and you hit it, you may pull yourself to that location provoking no attacks of opportunity (this also uses your movement). If your target is a creature you may make an attack roll using Dexterity and on a hit you deal normal unarmed damage +1.