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Want to bring a little Mob Psycho 100 energy to your D&D table? Psychic-looking attacks, an alarming amount of confidence, and a character who appears much less dangerous than they really are? There is a build idea in there.
This concept mixes a Psi Warrior fighter with a monk. Think of it as a character inspired by the series rather than a perfect recreation of Mob's powers. Reigen's showmanship is excellent roleplaying material. His actual psychic credentials are another conversation.
First, make sure everyone is using the same rulebook
This concept uses the 2014 fifth-edition framework and its supplements. Talk to your DM about multiclassing, available books, and any changes needed if your group uses the revised 2024 rules. Sorting this out before character creation is considerably less dramatic than doing it halfway through combat.
Pick your flavor of anime nonsense
Psi Warrior gives the fighter a psionic theme. For the monk side, Way of the Astral Self offers a supernatural martial-arts direction, while Way of the Ascendant Dragon offers a different, elemental take.
Describe your abilities with all the dramatic energy you like, but agree on the flavor with your DM and keep the printed mechanics. Calling an effect “psychic” does not automatically change its damage type. Nice try, though.
About the level split
A three-level monk dip with the remaining levels in fighter is one possible version. At level 20, that means monk 3/fighter 17. It is a long-term concept, so plan around the levels your campaign will actually reach.
Under the 2014 multiclassing rules, this combination needs at least Dexterity 13 and Wisdom 13; Dexterity also satisfies the fighter prerequisite. The two classes compete for ability scores and resources, so this is a theme-first choice. Staying with Psi Warrior alone is a simpler way to pursue the psychic fighter idea.
The books behind the build
Tasha's Cauldron of Everything contains Psi Warrior and Way of the Astral Self. If that is the combination you want, this is the relevant supplement to check first. See Tasha's Cauldron of Everything on Amazon (physical book)
Fizban's Treasury of Dragons contains Way of the Ascendant Dragon. You only need to consider this additional book if you choose that alternative. Check what your group already owns before starting a sourcebook shopping spree. See Fizban's Treasury of Dragons on Amazon (hardcover)
Physical books and digital character-builder access are different purchases; check exactly what the listing includes.
A basic polyhedral dice set is plenty for an in-person game. Fancy dice are optional. Making an unnecessarily dramatic announcement before rolling them is between you and your party.
Will your character be quietly terrifying or confidently underqualified? Tell us which direction you would take!
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