Exaggerated: Doom Komodo is at Level 1, same as Bob, but uses an HP to One attack. He comes back later at Level 1, while the heroes have reached the Cap of Level 100 and got the best Mons.
Downplayed: Doom Komodo is a demi-god compared to Prince bob during their first fight. When they have a rematch, Prince Bob has taken many levels in badass and brought his Five-Man Band while Doom Komodo has not, and as a result Prince Bob beats Doom Komodo, but it's still an extremely difficult fight that almost kills Prince Bob.
Doom Komodo, just like the other enemies, can't increase in level, even though he's not one of the Mons.
Alternatively, Doom Komodo is the toughest being in his ecological niche; he has no reason to believe the hero will improve so drastically, and no good sparring partners to up his own game.
Inverted: The Sorting Algorithm of Evil is in play, but it's the heroes who remain static while their opponents steadily grow in power.
Subverted: Doom Komodo gets even stronger the third time around.
Double Subverted: After Bob defeats a lot of the enemy's resources, Doom Komodo stays static between the third and final fights.
Parodied: Doom Komodo is revealed to have been called back from his vacation for the second battle; he's literally been doing no training for the rematch.
Zig Zagged: Level 50 Lamia is easily defeated by the level 65 Five-Man Band. However, she then becomes a level 80 One-Winged Angel. But then she sends down high XP minions and Alice and Bob Level Up to Level 90 and defeat Lamia in one swoop. But then she becomes a Level 95 Broken Winged Angel and defeats the heroes. But then Alice and Bob go off to find her and go into Level 100 and defeat her.
Implied: The villain avoids facing Bob after his defeat, instead throwing up seemingly insane defenses when the hero arrives, starting after the second battle where he manages to win.
Deconstructed: Emperor Evulz has a Xanatos Gambit going on - he drains the power of heroes that level grind and slaughters them. He skips straight to slaughtering the ones that don't level grind. Doom Komodo was completely useless.
Reconstructed: They manage to defeat Emperor Evulz anyway.
Plotted A Good Waste: The Empire has been in power for so long that their forces have grown complacent and overconfident; this is translated into gameplay by having most major villains never gain levels, while more Genre Savvy villians do scale to prove a greater threat to the party — and to players lulled into their own false sense of security by their own victories.