diamond

Both bosses had dialogue portraits that were changed in the final version of Gun v2 after the boss was redesigned. In the final version, the Diamond Dogs have 4 dialogue portraits. The first 3 for the Diamond Dogs and one for their Fusion Form.

Much like his fellow Diamond Dog, DD Yellow had a set of sprites which would've implied that both dogs took a lot of damage after Phase 1 hence the wires and broken crystal. They were replaced with much better looking sprites in the final version of Gun v2.

The sprites that were used for Diamond Dog Red before I changed them to be less ugly. Both bosses were supposed to have wires jutting out of their heads with sparks coming out. This was changed because I couldn't make them fit properly (both Diamond Dogs use Balrog's A.I during Phase 2).