Mark has made many characters throughout his time on Youtube, many of which he has played himself. While starting small, the amount of characters has expanded greatly.
Tropes applying to multiple characters
- Featureless Protagonist / The Voiceless: Any time the viewer is a character in a story this happens. Examples include Mark's date in A Date with Markiplier, the District Attorney in Who Killed Markiplier?, and Mark's partner-in-crime in A Heist with Markiplier.
- Identical Stranger:
- In Heist, there are 6 characters that look more or less the same (Magnum a little less than the rest due to his Badass Beard) due to all being played by Mark
- Mick Lauer has played both Abe the Detective in Who Killed Markiplier? and Warden Murderslaughter in A Heist with Markiplier.
- It's Pronounced "Tro-PAY": Both played straight and subverted with Markiplier's name: in Heist he says his name is pronounced Mark Ip-LEE-air. In Who Killed Markiplier? the Colonel pronounces it Marki-PLY-er.
- One Steve Limit: Averted: There's a Markiplier character in Who Killed Markiplier? and one in A Heist with Markiplier, and they are two very different people.
- Real Life Writes the Plot: certain characters are unable to be used because of external reasons
- Googleplier isn't used all too frequently as Mark as stated that the character is difficult to use due to copyright laws with Google.
- All of the Cyndago characters (The Author/The Host, Bim Trimmer, Dr. Iplier, Ed Edgar & Silver Shepard) are not slated to appear in any of Mark's future works due to Mark not having full ownership of those characters, Cyndago now being disbanded, and Mark not wanting to use those characters out of respect for Daniel's passing.
- Same Character, but Different: Defied: The Markiplier in Who Killed Markiplier? and the Markiplier in A Heist with Markiplier are not the same person, something Mark had to confirm after Heist released.
- The Smurfette Principle: Downplayed, but the amount of male characters heavily outweighs the amount of female characters. This is mostly because Mark plays a lot of his own characters.
- Talking to Himself:
- In Who Killed Markiplier?, there are multiple scenes where the Colonel and Damien have conversations with one another. Taken up to eleven in one of the side stories, DAMIEN, where the entire climax is a conversation between two characters played by Mark
- Many of Mark's skits involve this: Google Gets An Upgrade, Warfstache Interviews Markiplier, and Markiplier TV are some notable examples