Squarangl'r (character)/Backstory

When Squarangl'r was growing up in Shape City, he was known as Sifang Angular. He lived in an apartment with his parents and his sister, Circlina Ratio. He adopted the name "Squarangl'r" after his schoolmates at Coordinate Kindergarten made fun of him for being a square (literally). He accepted it, and combining it with his last name, there you have it:

SQUARANGL'R.

When he was sixteen, a tragic incident happened in Rightside High School, where he was studying while still in Shape City. One of the bullies punched him in the right, revealing that he was actually a "mistake" known as...

A SHAPESHIFTER.

He was forced to be exiled and had to live with other shapeshifters, who were totally insane after being away from their homes for a ridiculously long time (shapes, just like blocks, are practically immortal).

On the fourth day after he was punished, some Lemons (short for Numberlemonblocks) came into the forest where the shapeshifters were hiding (the forest is known as Neverfree). They saved Squarangl'r, and let him live in Sourbia, Lemonland's center location. After finding out that he can change his shape and is four times as large as Rebe, two units across by two units down, they officially crown him as NL-4.

AND THAT'S HOW NL-4 WAS MADE.

On the second episode of the third season (Lefts, Rights, and Wrongs), Squarangl'r heard the news that shapeshifters shall be welcome in Shape City, just to reform the cruelly-raised. That gave him an opportunity to return to his homeland. Upon returning to Shape City, he reunited with his family, who was pleased to see him reformed by the Lemons. That includes his mother Goldie Ratio, his father Hex Angular, and her sister Circlina. Squarangl'r then connected two rivaling academies who were aptly named Leftside and Rightside. He, Circlina, and the Lemons explained the three rectangular identical blocks between the two schools represented identity and equality, both sides are the same no matter what you set the variables to be.

THAT'S WHY THREE HORIZONTAL LINES REPRESENT "IS IDENTICAL TO".

On their second visit, Squarangl'r decided to give Circlina a value... for science. Finding out that her volume is π cubic units (or blocks), Squarangl'r used his Numberling Marker™ to label her value as "$π$".

"Maybe that new law that prohibits prohibiting shapeshifters wasn't such a bad idea after all."