The stars of the breakout comedy proved that they also have laughs off-screen, as they posed together in a shot captioned, "SQUAAAAAD."
The actor shared his excitement at running into his This Is Us co-star at the event writing, "Running into so many people I love. But the best is running into one of your #tv #besties."
Turtles take San Diego! The Parks and Recreation star was "learning from the legend himself" in San Diego.
These adorable friends are both at the convention promoting their superhero projects. Graham is set to voice April in Rise of the Teenage Mutant Ninja Turtles while Cameron will be playing Ruby Hale in the fifth season of Agents of S.H.I.E.L.D.
The cast of the highly anticipated science-fiction action horror film The Predator posed with an excited group of fans as they promoted the film with a panel.
The star of Crazy Ex-Girlfriend surprised fans at the convention by being a special guest at a panel.