Board Thread:Speculation House/@comment-1982694-20150620030032/@comment-10380701-20150620035659

Vergil probably has 40% inspiration. Outfit and design, yes. Palette and personality? Not so much.

Adam is 60% more Jetstream Sam for me. Given that he also has a gun-sheath and shares a red-colored sword.

But apparently, Monty confirmed that Adam is inspired by something far older than both Vergil and Sam.