In 1987, he began to write for Marvel with his first published story "Cry Vengeance!" appearing in Kickers, Inc. #4 (Feb. 1987).[3] He later wrote such titles as Marc Spector: Moon Knight, Avengers: Timeslide, X-Man and X-Universe. In Web of Spider-Man #100 (May 1993), Kavanagh and artist Alex Saviuk gave the lead character "Spider-Armor".[4] He wrote the Spider-Man/Punisher/Sabretooth: Designer Genes one-shot the following month.[5] Kavanagh was one of the writers on the "Maximum Carnage" storyline which ran through the various Spider-Man titles in 1993.[6] The first Black Cat limited series was co-written by Kavanagh and Joey Cavalieri in 1994.[7] Kavanagh pitched a storyline involving the return of Spider-Man's clone,[8] which then formed the basis of the "Clone Saga" which began in Web of Spider-Man #117 (Oct. 1994).[9] Kavanagh's last new comics project was the Before the Fantastic Four: The Storms limited series in 2000–2001.[3][10]
In 2011, Kavanagh co-founded the Internet startup company www.mybeanjar.com.[11]
^Cowsill, Alan (2012). "1990s". In Gilbert, Laura (ed.). Spider-Man Chronicle Celebrating 50 Years of Web-Slinging. London, United Kingdom: Dorling Kindersley. p. 204. ISBN978-0756692360. In the concluding chapter of a tale written by Terry Kavanagh and illustrated by Alex Saviuk, Spider-Man debuted a new armored costume.
^Cowsill "1990s" in Gilbert (2012), p. 205: "Three of Marvel's bestselling characters appeared together in this one-shot graphic novel by writer Terry Kavanagh and artist Scott McDaniel."
^Manning, Matthew K. (2008). "1990s". In Gilbert, Laura (ed.). Marvel Chronicle A Year by Year History. London, United Kingdom: Dorling Kindersley. p. 263. ISBN978-0756641238. Writers J. M. DeMatteis, Tom DeFalco, Terry Kavanagh, and David Michelinie...all brought their talents to this key story line.
^Cowsill "1990s" in Gilbert (2012), p. 212: "Writers Joey Cavalieri and Terry Kavanagh and artist Andrew Wildman were at the helm for the Black Cat's first four-issue miniseries."
^Saffel, Steve (2007). "Maximum Clonage". Spider-Man the Icon: The Life and Times of a Pop Culture Phenomenon. London, United Kingdom: Titan Books. p. 200. ISBN978-1-84576-324-4. Proposed by editor Danny Fingeroth and writer Terry Kavanagh, it was launched to inject new excitement into the continuity.
^Cowsill "1990s" in Gilbert (2012), p. 214: "This issue ushered in one of Marvel's most talked-about storylines ever – the 'Clone Saga'. Written by Terry Kavanagh and drawn by Steven Butler, the first chapter...saw Peter Parker still recovering from recent traumatic events."
^Manning "2000s" in Gilbert (2008), p. 303: "Written by Terry Kavanagh and drawn by Charlie Adlard, this [series]...detailed an early adventure of siblings Johnny and Sue Storm."
