He likes Kirby, SpongeBob & Sonic the Hedgehog.
They are stuck sideways, as evidenced by their face.
Can't speak without his bowtie on him.
Lateral is genderless (presumably male). WAS stuck in age of 5, but is actually 23 years old.
Can only tilt his head sideways & upside-down. If L could tilt his face upwards, he'd feel dizzy.
Aging throws L into a horrible spell of depression. Is struggling to cope with the trauma of being tortured by his creator, B.