Characters of K41

Main Characters Supporting Characters Antagonists Supporting Antagonists Recurring
 * K41 -Voiced by K41
 * Mario -Voiced by K41
 * Thatwaspointless -Voiced by Thatwaspointless/None (2019-Present); K41 (2017-2019)
 * Tanto64 -Voiced by Tanto64 (2020-Present); K41/None (2018-2020)
 * GV -Voiced by GV/None
 * Luigi -Voiced by Tanto64 (2021-Present); K41 (2015-2020)
 * Toad (Red) -Voiced by K41
 * Yoshi (Green) -Voiced by K41
 * Steve -Voiced by K41 *Steve died without revival in 128 Ways to Kill Steve, and was dead until Fight of the Fat Italian Minifigures 2019, where he got revived. He has been a supporting character since.
 * Bowser -Voiced by K41
 * K42 -Voiced by K41
 * Red -Voiced by K41
 * Herobrine -Voiced by None
 * The Gingerbread Man -Voiced by K41/None
 * Bowser Jr. -Voiced by None
 * Green Wizard -Voiced by Scubashark8857 (2020-Present); K41 (2015-2019)
 * Prongo -Voiced by None
 * Flage Camo -Voiced by K41
 * Peach -Voiced by K41/None
 * CringeyBoi69 -Voiced by K41
 * Phil -Voiced by K41
 * Abmoog -Voiced by K41
 * Helicopter -Voiced by K41
 * K4747 -Voiced by K4747 (2020-Present); K41/None (2018-2019)
 * Ruff64 -Voiced by Ruff64 (2020-Present); K41/None (2018-2019)
 * The Boomerang Idiots -Voiced by K41/None
 * Wario -Voiced by K41
 * Waluigi -Voiced by K41
 * Fire Toad -Voiced by K41
 * ObbyMarioBros -Voiced by ObbyMB (2021-Present); K41/None (2020)

Minor
 * Any color variant of Yoshi and Toad -Voiced by none
 * SMG4 -Voiced by K41/None
 * MM54321 -Voiced by K41/None
 * Metal Mario -Voiced by None
 * Sonic the Hedgehog -Voiced by None
 * Toad Cruise -Voiced by K41

Extremely Minor for Cameos only Characters Who will Never Appear Again (because K41 lost the figurines for them)
 * PYoshiBoi3
 * Zeus Krazy
 * LetsGame2Day
 * Pingwin
 * DK
 * Mooshroom
 * Any generic Goomba, Koopa Troopa, Hammer Bro, Fire Bro, Bob-omb, Dry Bones, Blooper, Shy Guy, Squipsqueak, Cheep Cheep, or other generic member of Bowser's Army
 * Any generic Lego City resident or employee
 * Any generic Minecraft mob
 * Daisy
 * Any cameo characters from Diary of a Wimpy Kid, Big Nate, Spongebob, or the Minions (excluding CringeyBoi69)
 * Blue Witch
 * Yellow Witch
 * Purple Monkey thing
 * Pink Platypus
 * Reindeer Dog
 * Alien
 * Robot
 * Obby for Succ

Note: K41 has lost track of which Youtubers have what color codes, so some will appear as cameos. They won't be referred to by name anymore, and are just used as generic citizens of the Mushroom Kingdom and Lego City or original characters such as Flage Camo.

Trivia:

Flage Camo was originally supposed to be a Youtuber named AhmetTR38, but after AhmetTR38 disappeared from videos in late 2018, K41 reused the figure to create an original character, Flage Camo, unrelated to the former.

Killer64 was another minor recolor that stopped appearing in videos in late 2018. In January 2022, while filming for Blast Away the Wall, K41 dismantled his figure and altered it cosmetically (changing the overalls color from purple back to Luigi's default color) to make it look like Tanto64's figure, since K41 lost his Tanto64 figure. This is also the 2nd time K41 repurposed a figure; the first time was in January 2019 when K41 broke part of his own figure and recolored another Mario to create a new K41 figure.