W

W is lavender with dark purple eyelids. Both of them appear to be two conjoined twins forming the single Letter, before the pronunciation of the Letter W (double U). Both have two eyes separated throughout the "V" of the body, and their mouths are underneath. The eyes have red pupils, a first for the series. It is unknown whether or not W is one brain in two halves of a body, or two brains in one body. They were first seen in a daydream spelling the word "COWARD" and first actual appearance looking up at the rainbow beam shot by N. They are later seen looking at the gems that Z formed to reverse time in Now I Know My ABC's. As children, w did not appear much only appearing on their way to attack f. In 3, W was residing alongside J at the edge of Z when the Calculator Ship crashes right in front of them. While W hasn't done anything to help, they witnessed the whole thing, also lining up to spell "TWO". They witnessed the battle between J, K, L, and O, and also witnesses L throw the Calculator into F's cave.

In 4, after L and the VAN go to the cave, W and the others watch from a distance. The numbers break free from O's gem and form a train with the the Math Machine. W was also one of the several letters that got ran over by 2. W is a Letter made up of two conjoined twins (likely craniopagus twins as they said their name at the same time, implying they share a brain). They don't tend to express much emotion much to their glum and ominous nature, but they have observed a lot of events around them such as F spelling frick and the numbers' attack on Z.