It was announced in September that the former Lost star will appear in an episode of the new ABC sitcom, which is set in a sports arena.
"Jorge plays a really funny part," Perry told Entertainment Weekly. "He's one of the workers at the arena who has to answer to Ben, my character, but you can tell he's a little smarter than I am."
Perry admitted that he was hoping to bring Garcia's character back in future episodes.
"I don't think a lot of people realise how dry and funny Jorge can be," he said. "He's done three episodes for us and we hope to have him back, because I love [Lost] and I love him."
The former Friends actor, who also writes and executive produces the series, added that performing multiple roles was "pretty exhausting".
"I'm proud of the show," he insisted. "I think we did a really good job of making it funny and introducing some great characters."
Mr. Sunshine premieres on February 9 at 9.30/8.30c on ABC.