Regarded as one of SHUSH's finest, Campbell was included in the master list of SHUSH agents, which proved his undoing. While entrusted with an undercover mission at a fish packing plant, he was himself packed in a tuna-labelled can on orders of Phineas Sharp, possibly by his henchmen.
Campbell is dedicated to his job at SHUSH.
There is nothing known about what Campbell looks like.
Campbell is working on an undercover investigation at a fish packing plant when he is targeted by Phineas Sharp, who needs him dead to prove to SHUSH he has acquired the list of their agents. He is packed into one of the cans meant for tuna and delivered as such to SHUSH Central. His death follows on Perkins's and preceeds two others.
- Agent Campbell is named after Kevin Campbell, one of the writers of Darkwing Duck.