Sir Reginald

Lore & Background

In the world of Regular Show, the park is a strange, liminal space where a blue jay and a raccoon mow lawns, a dragon hoards a pile of leaves, and a cat rules a small patch of grass with the quiet authority of a medieval baron. Sir Reginald occupies that last niche. He does not mow, he does not rake, he does not even seem to walk very often. He simply exists in a state of perpetual, sun-warmed indignation, and the rest of the park orbits his needs without complaint.

His relationship with Mordecai and Rigby is the closest thing to a 'family' dynamic he has. They are his servants, his food-delivery system, and his audience. He will bat at their hands, demand to be carried, or stare at them with the full weight of feline contempt if a meal is even a half-second late. Yet there is an undercurrent of genuine comfort in their bond—he is the one small, constant, non-threatening creature in a park that regularly explodes into multiverse-spanning chaos. When the world goes wrong, Sir Reginald is usually the one still napping on the same bench, utterly unbothered.

His design reinforces his character: a rounded, slightly pudgy blue-grey body, a broad face with large, expressive eyes, and a posture that always seems to say 'I was here first.' He is not sleek or wild; he is a house cat who has convinced himself he is a duchy.

Reader's Guide

Sir Reginald first appears in the 2010 pilot episode, immediately establishing himself as the park's self-appointed lord. He is a blue-grey cat voiced by Tom Kenny, and his role is that of Mordecai and Rigby's pet—a title he accepts only insofar as it guarantees his meals arrive on schedule.

His personality is built on three vivid traits: aristocratic entitlement (he will stare at you until you acknowledge his superiority), gluttonous comfort (food is the one thing that can redirect his attention), and a deep, bone-level laziness that makes even the most chaotic park events seem like an inconvenience to his nap. He speaks in short, clipped, slightly indignant bursts that sound like a butler filing a complaint.

His key relationships are with Mordecai and Rigby, who are simultaneously his caretakers and his subjects. He has a quiet, almost grudging bond with them—he will not abandon the park, and they will not abandon him, even when the park is on fire. His signature mannerism is the slow, deliberate tail-flick that signals he is about to say something profoundly unsatisfied.

Defining episodes include the Pilot, where he is introduced as the park's resident cat, and "The Pet," which places him squarely in the spotlight as the episode's focus. His design has remained largely consistent across the series' seven seasons: the same rounded blue-grey body, the same broad, slightly grumpy face. Tom Kenny voiced him throughout, giving the character a consistent, dry, slightly nasal delivery that became one of the show's small but beloved vocal signatures.

Did You Know?

• Sir Reginald is voiced by Tom Kenny, the same actor behind SpongeBob SquarePants, giving the cat a familiar, slightly deadpan vocal quality.
• Despite living in a park, Sir Reginald's behavior and posture are those of a well-fed house cat who has been elevated to a position of authority by sheer force of personality.
• He is one of the very few non-antagonist, non-main-character animals in the series, providing a calm, grounded counterpoint to the park's frequent supernatural chaos.
• His blue-grey color palette visually ties him to the show's overall cool-toned aesthetic, distinguishing him from the warmer-colored main characters.