Grey Dalek 2 (The Daleks Chase Walter the Worm)
From Tardis Wiki, the free Doctor Who reference
A Grey Dalek was at the front of a group of 3 Daleks chasing Walter the Worm over a hill, along with another Grey Dalek and a Bronze Dalek. They were the last of the group to shout "EXTERMINATE". (WC: The Daleks Chase Walter the Worm)
