Edison

Edison is a friend of both Mario and Luigi and their roomate in Mario Brothers Plumbing in The Super Mario Bros. Super Show!. Despite living in Mario Brothers Plumbing, Edison is rarely there, and when he is, its usually only briefly. Edison can most commonly be found in the walls of Mario Brothers Plumbing or a manhole in the floor, which apparently leads outside into Flatbush. Edison has an exceptionally odd appearance, his face being mostly covered by his goggles and mop-like hair, Edison is also always shown wearing a construction helmet with a light attached to it too. In contrast to Mario and Luigi, who are plumbers, Edison is an electrician.

Appearances
The first appearance of Edison in The Super Mario Bros. Super Show! was in the show's second episode, "King Mario of Cramalot / Day of the Orphan"; here, Edison acts as Luigi opponent in a game of chess, which Edison is extremely slow in playing. Eventually becoming annoyed with Edison indescicive chess playing, Luigi makes him make a move, which Luigi believes to be a bad one and counters. Edison manages to win the chess match by making his own counter to Luigi's though, and as Luigi stands dumbstruck after having lost the chess game, Edison begins to gloat.

Edison briefly appeared in "Brooklyn Bound / Cher's Poochie", helping Mario assemble his Pizza Transformer. After being given some cables by Mario, Edison travelled through his manhole and through the wall of Mario Brothers Plumbing and plugged in the cables, which were attached to the Pizza Transformer, in for Mario.

Trivia

 * Edison is seemingly named after the famed inventor Thomas Alva Edison, who is best known for having invented the incandescent lamp or lightbulb.