B is the second letter of the Alphablocks gang. She is also D's younger sister, who plays the bass guitar.
B is voiced by Teresa Gallagher.
She is a pale blue block with an orange star on her right eye and gentle eyelashes.
She is light grey and her star is red.
- (to her brother D) "Brother, we can barely hear ourselves play!"
- "Show us what's behind your back."
- "Bother! I can't sleep."
- "Bit late!"
- "Hello. What's a boy?"
Out of all the blue Alphablocks, she has the lightest blue body.
Her letter means 11 in Hexadecimal.
Her capital shape makes the "v" sound in Cyrillic languages.
- Alphablocks (first appearance)
- Moon (sound only)
- Sail (cameo)
- Jaybird (sound only)
- Magic (no solo lines)
- Hill (sound only)
- 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.