He and the rest of his warband were hunting a Bog Wyrm in the lakes of the Misted Isles, when they witnessed the creature disappear into a drain. Investigating the disappearance the warband ended up falling in the Harrowdeep. The warband is trying to find a way out of the labyrinthine caverns so they can bring the rest of the boyz to settle it.
He is happy to let the rest of the Greenskins do the fighting as long as he gets a fair share of the loot.
Shank is armed with a Krule Net.