* ContractualPurity: Oddly, seems to be free of this, unlike his co-stars. The MoralGuardians don't seem to have even noticed the existence of his film ''{{Film/Cherrybomb}}''.
* CrazyAwesome: Often comes across as this. Has gone on record that after Harry Potter, if he never acts again, at least he has an ''ice cream van''.
* EnsembleDarkhorse: Out of all of the actors in ''Harry Potter'', Rupert Grint often is considered the most talented actor, at least until the later films where Daniel Radcliffe and Emma Watson get to really show off their acting chops.
* HoYay: At the LA premiere of ''RiseOfThePlanetOfTheApes'', he wore a t-shirt that read '''"I ♥ [[TomFelton TOM FELTON]]"'''.
-->'''Tom:''' ''[via Twitter]'' Just call us [[PortmanteauCoupleName Rom or Tupert]].