Epic Rap Battles of History, pitting historical figures, celebrities, and fictional characters against each other. Tropes used to describe these combatants should be within the context of the raps. Spoilers have been left unmarked.
- Batter Up: Clocks a Mook in the face with a bat.
- Breaking the Fourth Wall: Deadpool's usual schtick.
Deadpool: (facing into the camera) "Do you honestly think I would screw this feud up,""and lose to the dude a huge toothie coochie chewed up?"
- He begins by diverting his attention from Boba to walk right up to the screen and directly address the audience:
- All of his verses are loaded with Star Wars trivia, and his third verse has him reading his lines straight from comicbook panels.
- Cloudcuckoolander: He's got two other voices in his head: a nutty one and a voice of reason.
- Elvis Impersonator: Imitates Elvis at one point.
- Expy: Boba points out that he was basically an Alternate Company Equivalent of Deathstroke, and accuses him of ripping off other superheroes.
- Fourth-Wall Observer: At one point, he addresses the people watching the video, asking if they think he'd lose to Boba Fett.
- Healing Factor: It doesn't impress Boba: he just tells him to go home and heal from what he dished out.
- Hypocritical Humor: "Presenting the most overrated character anyone's ever saw" Funny how it's Deadpool, who is considered by even his fans as the most overhyped/overrated Marvel character, saying this.
- He also mocks Boba for being a clone, leading Boba to point out he's not exactly the most original character himself.
- Insult Backfire: He touts himself as being, "one-of-a-kind" and calls Boba Fett a Xerox of his father. Boba retaliates by pointing out Deadpool's a rip-off of Deathstroke, then adds a list of other powers and features he borrowed from other characters such as Spiderman, Snake Eyes, and Wolverine - and finishes by calling Deadpool "sloppy seconds".
- Katanas Are Just Better: Boasts about his skills with his katanas.
- Large Ham: He certainly knows how to put on a show.
- Mood-Swinger: His mannerism is all over the place, ranging from calm and comical one moment, to Suddenly Shouting the next.
- Offhand Backhand: Catches a bat swung at him without looking back. Another one has him shooting a Mook in the head without looking.
- Red Oni, Blue Oni: Deadpool's spazzy behavior and theactrics contrasts sharply with Boba's reserved mannerism.
- Suddenly Shouting:
Deadpool: (with hat and cane) "Introducing the most overrated character anyone ever saw:""with only FIVE lines in The Triology and one of 'em was, "AAAAHH!!" (flails arms wildly)
- The first time he does it is during his second verse, as a jab at Boba's lack of screentime:
Deadpool: "WHO YOU CALLING SCHIZOPHRENIC?!"
- Also, being called schizophrenic seems to strike a nerve, though not enough to make him stop dancing.
Voiced by: Peter Shukoff
- Animorphism: Whenever ERB News needs The Announcer to appear onscreen, a talking animal is used. These have included a monkey, a cat, and a bear. In the battles themselves, The Announcer is He Who Must Not Be Seen.
- Catchphrase: He opens and closes every rap battle the same way.EPIC RAP BATTLES OF HISTORY! [Character 1] vs. [Character 2]! BEGIN!WHO WON? WHO'S NEXT? YOU DECIDE! EPIC RAP BATTLES OF HISTORY!
- Flanderization: He originally had a clear and deep voice. Progressively, it becomes more and more high-pitched and less coherent.
- Killed Mid-Sentence: Gets bitten and turned into a zombie at the end of "Rick Grimes vs. Walter White".
- Large Ham Announcer: He shouts the introduction and conclusion, although he turned down the volume quite a bit in Season 4.
- The Unintelligible: Getting progressively worse with each battle.
- The Voice: That's all he is: a voice.
Voiced by: Lloyd Ahlquist
- Badass: Threatened to carve his own chin out of Mount Rushmore and beat Lloyd and Peter with it if they didn't get back to work.
- Badass Mustache: Roosevelt is well known for his iconic mustache and for being a general Badass.
- Catch Phrase: "What's up, bitches?!"
- Large Ham Announcer: Much like the Announcer, he is loud and boisterous.
- OOC Is Serious Business: Teddy's too epic for the rap battles, and the only figure represented who hasn't picked sides, much less participated in a battle.
Recurring Guest Stars
- Motor Mouth: His specialty. He's very well known for being able to rap at amazing speeds.
- Pretty Fly for a White Guy: He's white and can rap with incredible skill.
- The More You Know: Takes a little time to explain iambic pentameter and trochee in the BTS for "Stephen King vs Edgar Allan Poe"
- And Starring: The season 4 finale credits all the guest stars by episode, but Zach goes here instead.
- Large Ham: Ebenezer Scrooge is a standout example.
- And Walt Disney, who is so intense he crosses over into scary territory.
- Man of a Thousand Voices: Only his Sherlock Holmes and Ebenezer Scrooge sound remotely alike.
- Motor Mouth: Not to Watsky's level but still above average.
- Only Known by Their Nickname: Was credited as MC Mr Napkins for a while.
- Sixth Ranger: He's put in enough appearances and writing to count as one for Peter and Lloyd.
- He's also co-written all the episodes of Season 4 and most of Season 3.
- Slasher Smile: Pulls off an astounding one as Walt Disney whilst shouting in a Voice of the Legion.
- Ambiguously Brown: Moreso with that Super Saiyan makeup. Still, a lot of fans feel he's a better casting choice than Justin Chatwin anyways.
- Early-Bird Cameo: His Boba Fett counts as one. Not even the suit acting, just the voice.
- Homage: His rap style owes a lot to Beastie Boys and Rage Against the Machine.
- Large Ham: The main reason the voice-only above stood out. Goku also has these moments.
- Heroic Build: Packs just enough muscle to pull off Goku.
- Motor Mouth: During a warmup exercise in one BTS.
- Badass Baritone: Key's idea of Michael Jordan.
- Bald of Awesome: Keegan Michael Key, which fits in perfectly with both of his characters thus far.
- But Not Too Black: Key, which helps him with pulling off Gandhi, but as Michael Jordan they noticeably darken him further.
- Large Ham: Both of them! Special mention goes to Key's Circling Monologue for "Michael Jordan vs Muhammad Ali".
- Special Guest: Twice as of the fourth season.
- Walking Shirtless Scene: Key as Gandhi and Peele as Muhammad Ali, balancing it out.
- Large Ham: Look no further than his Mr T.
- Scary Black Man: Mr. T and Kanye West were meant to invoke this, but turn out more like Large Ham instead. Shaka Zulu plays this completely straight however.
- Badass Baritone: Rhett has a strong deep voice.
- Badass Beard: Rhett, in all three of his appearances as Donatello (the artist), and Wilbur Wright and William Clark sports a solid goatee.
- Big Guy, Little Guy: Rhett is way taller than Link, so that a row of Scully Boxes were needed to film "Renaissance Artists vs TMNT".
- Wicked Cultured: Downplayed and not symptomatic of ERB as a whole, but all of their appearances pit them directly against Lloyd and Peter, portraying well-spoken and highly intelligent historical pioneers while the regulars play casual-speaking fictional pop culture heroes.