Springer

21

Springer was the first Transformer known to gain two alternate modes. He was Ultra Magnus' lieutenant in the group known as the Wreckers

seaspray

9

Seaspray is a member of the Wreckers who fought alongside Wheeljack and Bulkhead. The latter Wrecker lovingly calls Seaspray "ol' Barnacle Butt.

Pyro

6

Pyro died fighting during the Great War along with his other fellow Wreckers. His name was mentioned by Wheeljack in his conversation with Bulkhead.