Chris Sullivan turned a familiar This Is Us credit into something even his castmates had missed: he was the voice behind GEICO's camel in the 2013 Hump Day commercial. On the That Was Us podcast, Sterling K. Brown and Mandy Moore learned that the voice asking, "Guess what day it is?" belonged to their co-star.
Six seasons with Chris Sullivan
After six seasons together on This Is Us, Brown and Moore thought they knew almost everything about Sullivan. They did not know he had already been part of a GEICO spot that became part of Wednesday's vocabulary.
The commercial debuted in 2013 and centered on a camel named Caleb wandering through an office before celebrating Wednesday. That setup gave the ad a simple hook and helped make the voice behind it one of the more durable hidden credits in Sullivan's career.
Caleb and The Martin Agency
The spot was created by The Martin Agency and became the kind of ad that outlives its first run. It inspired memes, parodies and repeated Wednesday references, which is why the reveal on That Was Us landed as more than a trivia answer.
For Brown and Moore, the surprise came from the contrast between the actor they knew on This Is Us and the voice they had not connected to him. For viewers, the story fills in an early credit that helps explain how Sullivan's name can now sit beside both TV drama and one of GEICO's best-known campaigns.
That Was Us reaction
The practical takeaway is simple: the camel's voice was not a mystery performance from some unknown studio regular, but a pre-fame turn by Sullivan himself. If the ad felt oddly familiar before, now there is a name attached to it, and that is usually how these hidden credits start to travel again.
