PeachBlossomMedia/Alphablocks

Cast

 * Roisin (from Rock-A-Bye Island) as A
 * Luna Loud (from The Loud House) as B
 * Lucy (from Ready, Dress, Go!) as C
 * Sean (from Rock-A-Bye Island) as D
 * Milo Murphy (from Milo Murphy’s Law) as E
 * Shimmer (from Shimmer and Shine) as F
 * Hazel (from Little Charmers) as G
 * Ruby (from Rusty Rivets) as H
 * Daphne Blake (from Be Cool, Scooby Doo!) as I
 * Bridget (from Rock-A-Bye Island) as J
 * Ciaran (from Rock-A-Bye Island) as K
 * Mya Go (from Mya Go) as L
 * Bus Driver Bob (from The Doodlebops: Rocking Road Show) as M
 * Robbie Rotten (from LazyTown) as N
 * Bingo (from Puppy Dog Pals) as O
 * Olive (from Olive and The Rhyme Rescue Crew) as P
 * Hanazuki (from Hanazuki: Full of Treasures) as Q
 * Frankie Pamplemousse (from The ZhuZhu Pets) as R
 * L.B. (from Olive and The Rhyme Rescue Crew) as S
 * Mr. Munky (from Olive and The Rhyme Rescue Crew) as T
 * Clifford (from Clifford The Big Red Dog) as U
 * Curious George as V
 * George Pig (from Peppa Pig) as W
 * Rusty (from Rusty Rivets) as X
 * Beep (from Olive and The Rhyme Rescue Crew) as Y
 * Swiper (from Dora The Explorer) as Z
 * Connor (from Rock-A-Bye Island) as The Person Who Has The Blocks