Combat Medic: When he acquires the "Dragon Spirit" spell that can heal him at little cost of mana or obtains life potions to be used in later battles in 3D: Return to the Lair.
Cowardly Lion: Has shades of this, but is no less deadly with his sword.
Dissonant Serenity: While most of his "Falling" deaths have him screaming bloody murder, some in Time Warp have him pouting irritably at the player. One particular late-game death involves calmly whistling whilst sinking into lava.
Heroic BSOD/Heartbroken Badass: Near the end of Time Warp, after he brings Daphne down to normal with the deathly side effect of the Death Ring in the original, when he sees her lying in the pedestal bed, he thinks he has failed her or caused her death and gives what he thinks is their Last Kiss and buries his head in grief, all the while using Offhand Backhands on the little imps that repeatedly attack him. Little does he realize that the kiss was actually a True Love's Kiss that has broken the spell while he is fighting off the imps and trying to stay alive by climbing onto crumbling platforms; and when she calls his name, he recovers completely upon seeing her alive and well.
Heroic Mime: Has almost no dialogue whatsoever in the games, save for two lines in both of the first two games; "Uh oh", "Wow", "Daphne!" and "Yahoo!"
One-Hit-Point Wonder: A notable handicap of his in almost all of the games save 3D: Return to the Lair. Even in the NES version, there are many enemies and obstacles (even doors) that kill him in a single hit, excluding the bats and skulls. However, in the third game, Dirk not only has a life bar, but he also has mana and can take some hits from all enemies before dying, though Bottomless Pits do spell instant death.
Briefly averted in "Time Warp" when part of the story requires Dirk to get bitten hard in the ankle by an enemy in order for the story to progress.
One-Winged Angel: Non-villainous example; in "Time Warp" when Mordroc succeeds in putting the Death Ring on her finger, she transforms into a massive giant pig-nosed lizard. And this is either in the original version after you collect all the treasures, or in the Re Cut if you miss any (if you collected all the treasures in this one, however, she suddenly falls in a deathly faint and vanishes, and you see her again suddenly lying in bed after defeating Mordoc, which is either Fridge Brilliance or Fridge Logic).
Family-Unfriendly Death: Besides his painful transformation, he is clearly shattering to pieces and has steam hissing from his body before Dirk slashes at him with his sword, causing him to explode and crumble to dust.
Flunky Boss: He uses a couple centaurs and the local reptiles to ward off Dirk during the prehistoric level.
For the Evulz: His only plausible motivation for kidnapping Daphne and wedding her with the Death Ring.
Gag Nose: Has one long enough to have a twig growing on it!
Get Back Here Boss: The entire game is spent chasing him down from time period after time period.
Magic Pants: Subverted in his Death Ring transformation—while Daphne's outfit morphs along with her when she transforms with the Death Ring (obviously for purposes of modesty), Mordroc's transformation has him completely bursting out of his cloak.
One-Winged Angel: In 3D, after getting hit enough times by Dirk's special arrow, he'll transform into a giant black dragon.