[5.] Greenie

Greenie is basically an alternate universe version of Midnight. He was most of his life hidden in a lab where he constantly got tested because he was known to be the only inkling in existence to ever contact Midnight and his entities from another dimension. At age 15, he was finally able to freely leave the lab and live a normal life while still keeping his powers. He even took time to create a splatana but it is weak towards anyone in the universe of splatoon and strong against any enemies outside the universe.

Age 12
Greenie was miserable. He woke up everyday to being tested in the lab for his powers that he never asked for and he just wanted to leave and play normal turf war and make new friends like everyone else. He was stupid shy around everyone.

Age 15
After asking constantly everyday, Greenie was finally gained trust to go outside the lab on his own. He made friends and even learned how to play turf war. He also has gotten less and less shy and more happy and active. Eventually got to the point to where he made his custom splatana.

Age 18
Greenie is now super popular and has made so many friends and has been super careful using his powers. He is fully confident to use his powers to protect everyone. He is happy, excited, living the life he always wanted. Even constantly made upgrades to his splatana everyday. Turf War is his favorite game now!

Midnight: Best Friend (Not Canon)
Noir: Best Friend
Emerald: Best Friend
Blue: Best Friend