COMIC URBAN LEGEND: Terror, Inc. was a continuation of a previous comic from another line of comic books.
In the late 1980s, Marvel's Epic line was not exactly in great shape.
In an attempt to pump some life into it, writer D.G. Chichester was assigned to create a bunch of new characters and titles and work them into the "Shadowline" universe.
Later, the series had a big crossover called Critical Mass.
Does the character on the cover look familiar?
Well, his name was Shreck.
He had the ability to replace parts of his body (hands, feet, arms, legs, eyes, ears, nose, etc.) with those of other people.
Well, when Epic went under, editor Marc McLaurin asked Chichester to bring Shreck to the Marvel Universe, where he became (you guessed it)...
Only, of course, Marc McLaurin said that Terror was NOT Shreck.
The move is discussed in detail here, and Chichester shows up to give his feelings on the matter,
No matter what Marcus may or may not have said as a "good soldier" in the Marvel Universe army, Shreck was Terror and Terror was Shreck ...but for the fact that Terror got to develop more of a a back story as time went on. We never did address the transition from Shadowline to MU, however, and probably never would have (as at that point the Shadowline was long since relegated to "Who cares?" among the larger editorial staff at the office (although those of us who invested a lot of time and effort in it kept a warm spot in our hearts).
Odd history, eh?