It just occurred to me that the characters Impactor and Rack 'N' Ruin are probably properties of Marvel Comics, not Hasbro (just like Circuit Breaker and Deaths Head).
Still... perhaps they could make characters that bear a homage-like resemblance to those characters and see if Hasbro's legal dept could get around their names, e.g.:
Impactor = "Autobot Impactor" or perhaps just "Impact."
Rack 'N' Ruin = I wonder if they could get around it simply by naming one Autobot "Rack" and the other "Ruin" (instead naming both as "Rack 'N' Ruin"). Another possibility might be to replace "'N'" with "and" or "&".
Xaaron might also belong to Marvel... so perhaps they could use "Autobot Xaaron" or perhaps tweak the spelling to "Xaron" or heh, maybe "X-Aaron." I'm sure Archer would love that!
