Mink vs. Mecha-Damaramu
SPOILER!
Damaramu returns to the tournament with a cybernetic body and a long list of improvements he is desperate to demonstrate. The upgrades are real. The problem is that Damaramu is still the person controlling them.
The Breakdown
Instead of conserving his new power for the match, Damaramu burns through energy showing off what his rebuilt body can do. Mink is then able to knock him out of the fight with much less trouble than the machinery suggests she should have.
Why it matters
Dragon Half understands a basic comedy rule perfectly: making Damaramu stronger only creates a more expensive way for Damaramu to lose.
Debut: Ep 002 - The Brutal Killer Martial Arts Tournament
Princess Vina vs. Dug Fin
SPOILER!
Vina's half-slime body makes her much harder to hurt than her princess image suggests, but Dug Fin is one of the few tournament fighters played as a genuine physical threat instead of a walking punch line.
The Breakdown
Dug Fin's speed and fire-based attacks overwhelm Vina and establish him as the finalist Mink will actually have to fight. The match is useful because the OVA briefly stops using Vina only as a romantic rival and demonstrates that her strange body has real combat advantages, just not enough against Dug Fin.
What changed
For the first time in the tournament, Mink gets an opponent who looks dangerous because he is competent rather than because the setup is ridiculous.
Debut: Ep 002 - The Brutal Killer Martial Arts Tournament