Resist the Beast/Playing With

Basic Trope: A character becoming a Tragic Monster tries to resist the murderous instincts that come with the change, but usually not for long.
 * Straight: Bill is slowly turning into a viscious wereshark, and is trying to hold back the Unstoppable Rage.
 * Exaggerated: ???
 * Downplayed: Bill notices he is starting to become a total Jerkass, but can't stop himself no matter how hard he tries.
 * Justified: ???
 * Inverted: Bill's pet shark is in a Humanity Ensues situation tries to resist human urges.
 * Subverted: The character feels themselves change, and gathers up all their Heroic Willpower to Resist the Beast, until … nothing. Their original mind remains perfectly intact.
 * Double Subverted: ...but then begins the Slow Transformation anew.
 * Parodied: A character who becomes a werewolf tries in vain to resist his animalistic urges to … chase his tail and play fetch.
 * Averted: Bill becomes a wereshark - be it voluntary or involuntary, permanently or otherwise - but his human mind was never at risk of being lost to any kind of primal instinct.
 * Enforced: The show needs a bit of transhuman drama to boost the ratings.
 * ...or the show's creators want to set up an I Know You're in There Somewhere Fight.
 * Lampshaded: ???
 * Discussed: ???
 * Conversed: ???