Numberlemon or Numberlehumans

Plot
Nolan and Knoelon make potions that can turn Numberlemonblocks into humans

Trivia

 * This is similar to Arifmetix's spin-off series of Numberblocks called Numberhumans. It reveals that there's a part 2 called Back to Numberlemon, a part 3 called A Mysterious Portal and a part 4 called Numberlemon vs. Numberhumans and a part 5 called The Fight Continues