If you want to see the episode, see Seventeen's EntertainerSeventeen was a character in NB
Seventeen was a numberblock with dark purple eyes and lips. He has a rainbow 'hat' on top and his body was white with red borders. he also has paint splats all over his body which he uses for his art palette.
" Hold your pose! "
" That's not 'perfect'! "( Seventeen's Entertainer )
" Hold on! "
( To his sister, Nineteen ) " Let's play! "