He is voiced by Eric Bauza.
He is a black and white panda with eyes that are colored blue, yellow and orange. His paws and ears have a design of pink heart shapes.
- Making people happy
- Giving Hugs
- People "harshing the party vibe."
Allegro can make people fall into a happy trance (making them do whatever they want with no regard to what is required or appropriate), summon multiple "party lobster" minions, and manipulate reality to a limited degree.
He is very fragile and can be broken if sufficiently injured, revealing a smaller, glowing bear that apparently cannot function on its own.
- Somewhere Over the Swingset
- Largo (last appearance, now merged back into Cosmic Bear)
- Bedtime (cameo)
- His high pitched voice and demon-like powers are similar to HIM.
- He bears (no pun intended) a resemblance to Panda from We Bare Bears, another Cartoon Network show.
- Out of all the villains in the reboot, Allegro is considered the worst of them by fans, most likely due to the twerking joke.
- In Turkish dub, Allegro is voiced by Tugay Erverdi who also dubbed HIM in the Turkish dub of PPG (1998 TV Series) and did the same dub for Benson in the 2nd Season of Regular Show.