Ghostbusters work
Delgado colored the IDW Ghostbusters line across its main runs. His credits include the two Con-Volution and What in Samhain Just Happened?! one-shots; the Ghostbusters Ongoing Series spanning Volume 1 and Volume 2 (36 issues in all) and the Mass Hysteria event; Ghostbusters Get Real; the Ghostbusters Annual editions for 2015, 2017, and 2018; Ghostbusters International; Ghostbusters 101; Ghostbusters: Interdimensional Cross-Rip; Ghostbusters Crossing Over; Ghostbusters IDW 20/20; the four 35th Anniversary one-shots (Ghostbusters, The Real Ghostbusters, Answer The Call Ghostbusters, and Extreme Ghostbusters); and Ghostbusters Year One. He also colored the crossover series Teenage Mutant Ninja Turtles/Ghostbusters (both volumes) and Transformers/Ghostbusters: Ghosts of Cybertron, plus the Ghostbusters: Funko Universe and Ghostbusters: Dia de Los Muertos specials.
For Ghostbusters International #10 and for Ghostbusters 101 #4 through #6, Delgado shared the color credit with Anna Chher.
Beyond the comics, Delgado contributed color work to Ghostbusters: The Board Game produced by Cryptozoic Entertainment.
His coloring method treats ghosts and other energy sources as a separate pass: he duplicates the line art to color them. He generally picks shading colors as he works, reaching for a multiply-mode layer with a fixed blue when he needs to darken a panel or a character, and a combination of screen-mode and overlay layers at low opacity when he needs to lighten one.
Cameos and references in the comics
Delgado worked himself, his friends, and his family into the books he colored, and other creators returned the favor by naming things after him.
He inserts a "#15" into each comic he works on as a personal signature; the number is also tied to his initials, which show up as a "LAD 15" file-cabinet label in Ghostbusters Volume 2 #19. His own likeness appears as a background extra in several issues, including the audience of "The Ja'nine Show" in Ghostbusters Volume 1 #1, a New Yorker in Volume 1 #3, and a wedding guest in the Volume 2 wedding storyline and in the Annual 2015. He drew himself, friends, and family into the wedding crowd on the crossover Teenage Mutant Ninja Turtles/Ghostbusters #1.
Delgado's Gym, which first appears in Ghostbusters Volume 1 #5, is named after him. In Ghostbusters International #5 an FBI special agent listed in the property-damage section carries his name, and in the "Where Winston Was" story from the Annual 2017 one of the journalists is based on and named after both Delgado and Erik Burnham. On the credits page of Ghostbusters: Answer The Call #1 he was mistakenly listed twice as an artist rather than a colorist.
Other work
Outside the Ghostbusters titles, Delgado has colored Gene Simmons House of Horrors #3, Mack Bolan: The Executioner, Arcane Legions, and the comic adaptation of Underworld: Rise of the Lycans.