Archie

Archie is considerably one of the four key characters of each individual area, the area he occupies is Trita. Unlike the other NPCs, their dialog changes when specific events occur, like when you either finish a puzzle or obtain the bundle of flowers of that area. However, Archie is different.

His first interaction makes it seem like he was waiting all this time solely for Limbo to enter the room he occupies, where he then says "Care to join me to the station?" and jokes that Limbo's silent reply was an enthusiastic one before speeding off and showing the player that the flower tile on the floor can teleport them to other areas in Trita. When following, once again, Archie was waiting before speeding off again, this time entering a train.

The ride on the loud train shows how laid back Archie is while showing that the situation is a stressor for Limbo. When the train stops, he tells Limbo he's waiting for him to leave in order for him to "exist no longer" and his final line of dialog warns Limbo to watch out for the second train, which would've been its own event, but CR said that it couldn't run smoothly like hoped, so it was cut. Overall, he might not have directly handed the key over, but he acts like the other key characters and where he was first seen waiting was also the future placeholder for the key once the puzzle was completed.

His SE is a short nasally "Heh".

Appearance
Archie has fair skin and a mask with a half-cut bottom half of a circle with two miniscule lines slightly poking out from the middle bottom of the eye holes while the mouth is a more obvious cartoon style where a smile curves up high and the teeth are just black vertical lines. His short black hair is slicked back with two strands sticking out in the back and he's wearing a t-shirt that's striped with partially darkened red and blue while wearing light blue pants and black shoes.

Trivia

 * His mask is supposed to partially resemble a mime's makeup.
 * CR once called him "Toni" and got confused when realizing his name was "Archie".