The Marketkeepers

The Marketkeepers, starred in The Game's one time special, The Dungeon. Each Marketkeeper sells something they like, robotic parts, eyes, ink, or help, each one can sell anything, but they prefer not to.
Half Up: Sells robotic parts and help
Half Down: sells ink and help
Full Moon: sells any type of eye
Celrey: Sells whatever he feels like, he mostly sells help
False Order: The fusion of Half up, Half Down, and Full Moon: sells life insurance
The rest of the listed are either ones that showed up in The Dungeon or are half breeds
Lucked Box: Sold random items that were mostly helpful, he also sells lucky blocks
Sleeping Dealer: The main Marketkeeper in The Dungeon, he was a basic general store
Shaded Smoke: The black market of the Marketkeepers, he sells shady stuff and once meet him, if you look away, he poofs.
Monstrosity: Giant mutant Marketkeeper who fought Altair, he is immune to physical damage
Arcane Watcher: Giant mutant Marketkeeper who also fought Altair, he is immune to ranged damage
The Vender: A Corrupted version of a marketkeeper who wants to put Wintergreen out of business