Colour Coded Characters: And thank god for it, most of the characters are based on kirby Palette Swap options, though even the more unique characters have their own colours as well.
Cross Over: Kirby's Dream Adventure, another popular KirbySprite Comic on Smack Jeeves, and Kirby Adventure. Notable in that the crossover happened in both comics at the same time. There's another one going on right now, this time with the comic "20 Times Kirby," which is done in the same fashion.
Early-Installment Weirdness: The first two segments ("The First Mission" and "Unaverage Days for Unaverage Puffs") are chock-full of it, with King Dedede making a very brief appearance in "First Mission," (no bosses from the Kirby games make any appearances later, though a few mini-bosses do) and "Unaverage Days" being full of bizarre gags that are rarely, if ever, brought up again.
Epic Fail: Vezo and Fanhal get into this every now and then. In "Jetting Across the Ice," Vezo backed off a cliff. TWICE. In "For Dream Adventures", Fanhal ends up planting Rosies instead of the Mega Tomato, resulting in him ending up in the hospital room with severe mental scarring.
Mysterious Past: Vezo. So far, we've met two Gims from his past. One of them currently works for the bad guys, and does not remember him.
Original Character: Quite a few; Fusion Kirby, Jarkes, Falcon Pawnch, Ignus Unis, Jet, Satomi, Gigi, and Kiblar (some not made completely for comic) appear in the comic. Author appears as Ultimate Kirby.i
Technically, most of the characters are Original Characters. The above characters are characters submitted by the fans as minor characters that show up at different points, either as clients for the KAS (Jet, Falcon Pawnch, Jarkes, Kiblar), or minor villains (Fusion Kirby, Ignus Unis). Two of them (Satomi, Gigi) are instead minor characters who got in due to winning an art contest.