Chaos still holds four notable distinctions. First, it was (and still is) the only true graphic novel (that is, long form, single-story narrative) ever written in the Doctor Who universe. Second, it was the first story ever compiled under the Marvel UK (later, Panini) license done in full color. Third, it was the first major explanation of what had happened to Peri following "Trial of a Timelord". And fourth, it's the only Doctor Who comic work written by an actor who played the Doctor. And, at least according to the forward, Colin Baker specifically requested to use Frobisher from creators Parkhouse and Ridgway.

Frobisher is thus quite an important comic companion. He had an extremely lengthy, if somewhat irregular, run—second only to Izzy's time with the Eighth Doctor. He was taken to heart by the actor who played "his" first Doctor. And he's the only comics-only companion to serve two different Doctors under the Marvel license, a feat that would be absolutely unique were it not for TV Comic's John and Gillian. (Though, as we learned from the Eighth Doctor's adventures, all those TV Comic stories were a dream, anyway.)