Fifty-Five or 55 is a Numberblock made up of 55 blocks.
Fifty-Five has 50 sky blue blocks with blue borders and 5 cyan blocks. His limbs are navy blue. He wears a snowy white, crimson mask and has a maroon mouth.
- The Big One (compound)
- One Giant Step Squad
- 100 Ways to Leave the Planet
- Total: 2 (figured-out); 1 (compound)
ThatGuy30722's design of 55 is a football coach. She's 5x11, so she's a mentor figure like 5, but football-themed like 11. She breaks the team strategy into 10 steps, and her whistle is shaped like a Fibonacci spiral, which is an Easter egg, as she's in the Fibonacci sequence.
- "Starship explorer Fifty-Five, first interplanetary mission underway!"
- 55 is the first and currently only Numberblock in the 50s to be figured-out.
- 55 is the second “5 ender” to be male, with the first being 35.
- 55 can be a big blue space rocket, and a step squad.
- 55 is the first Step Squad to have a permanent mask but no boots.
- 55 is the only multiple of 11 to have eyes with the same size.
- The Football Club might have to be renamed to "League of Elevens" or simply "Eleven Club" due to the drastic change of the theme. 11 and 22 both are footballers, unlike 55.