Terry was a Marvel Comics editor from 1985 to 1997. Titles he edited during that time included MARVEL COMICS PRESENTS and NICK FURY, AGENT OF S.H.I.E.L.D, and BLACK WIDOW.

Terry also wrote for Marvel until the mid 2000s. He wrote such titles as MOON KNIGHT, AVENGERS, FANTASTIC FOUR, and X-MAN.

He was one of the writers on the Maximum Carnage storyline which ran through the various SPIDER-MAN titles in 1993. He pitched a storyline involving the return of Spider-Man’s clone, which then formed the basis of the long running Spider-Man maxi-series THE CLONE SAGA.

He also wrote and edited comics for Zenescope Entertainment from 2017 to 2019, and consulted on the Marvel Entertainment streaming series, MARVEL’S HERO PROJECT.