B is the second letter of the Alphablocks gang. She is also D's Younger sister, who plays a bass.
B is voiced by Lizzie Waterworth.
Colour: Blue and orange
Friends: The other Alphablocks, Numberblocks, Numberjacks, Plusman, The Ehh Guy, The YOU! Guy, Big Yeti (Formerly)
Enemies: The Ehh Guy (Former Arch Enemy), The YOU! Guy (Formerly), Killer Robots, Evil Alien, Vikings, Zombies, Big Yeti
- Hill funny
- On (sound only)
- Snowman (cameo)
- Frog on a Dog (sound only)
- Song (sound only)
- Thing (sound only)
- Card (sound only)
- Alphabet (sound only)
- Mine (sound only)
- Home (sound only)
- Blue (sound only)
- Birthday Girl
- Cowboy (Last appearance)
- Rastamouse (namesake series) - Both are bassists.
- Luna Loud (The Loud House) - Both play guitars.
- Goat (Pig Goat Banana Cricket) - Both play guitars.
- Boa Hancock (One Piece) Both are Underes.
|A, B, C, D, E, F, G, H, I, J, K, L, M, N, O, P, Q, R, S, T, U, V, W, X, Y, Z|
|Q W E R T Y U I O P|
|Common: A, E, I, L, N, O, R, S, T, U|
|Towering Intellects: I, J, T, L, E, F|