These are what we call the 'YMMV items.' Things that some people find in this work. We call them 'your mileage might vary' because not everyone sees these things in the same way. This starts discussions in the trope lists, a thing we don't want. Please use the discussion page if you'd like to discuss any of these items.
YMMV: X-Men Legends
Complete Monster: GeneralWilliamKincaid is the Big Bad of the first game. His hatred of mutants is so great that he commits numerous crimes: re-activating the destructive Sentinels; kidnapping innocent mutants (such as the Morlocks from the sewers), in order to experiment on them; creating human-Sentinel hybrids which may not have been made just from mutants; and his ultimate plan is to collapse Asteroid M upon New York City in order to obliterate it and all its inhabitants, just so that humanity blames mutants for it and eradicates them from the face of the Earth. While he does have a Freudian Excuse (revealed in conversation with an NPC) - a mutant with poor control over their power killed his wife - this is far too weak to justify his genocidal hatred, particularly since he's willing to kill millions of humans just to get his revenge.
Crowning Moment of Funny - After unlocking him in the sequel, Deadpool is full of this, such as proclaiming "And now, I'm better at whatever it is Wolverine does!" after levelling up; but the Crowning Moment comes if you have Deadpool in your team when you face him as a boss - the two Deadpools start arguing about who's the real Deadpool.
Jean Grey in the first game, thanks to her Telekinetic Combat passive. Combined with Psionic Strike and Psychic Shout, her sheer power comes close to Prof X's. The fact that many of the endgame enemies are Sentinels and robots, who are resistant to psionic attacks helps mitigate this.
Storm in the first game is even better than in the second. She has powerful attacks and Leadership, can weld, fly, her whirlwinds stun foes and her lightning can hit enemies in the other room and even link. She's just a very useful character.
Magneto in the second game. Developed judiciously, he can clear entire rooms in seconds, has excellent crowd control and is pretty much unkillable, while sending the entire team's XP through the roof and solving every puzzle on his own.
Any kind of gear that has +X Damage on it (not any specific damage type) amplifies any damage dealt by the character, making them powerhouses. Jean Grey had a similar passive ability in the first game which amplified any psychic damage she did, making her the strongest character after Prof X if levelled properly.
After proper leveling, Nightcrawler's dash attack makes taking out entire rooms full of mooks hilariously easy.
That One Boss: In the second game, Sugar Man can kill a character in one hit, and there's no way to tell this attack apart from his regular ones, which hit like a truck. What's worse is that Sugar Man has a nasty case of Gang Up on the Human and will follow the character the player controls all over the room, ignoring the rest of the party unless they get between him and your character. AI teammates never seem to get hit with the OHKO attack either. The battle boils down to controlling a character with a ranged attack, firing a couple shots at him, then running away once he catches up to repeat the process.
That One Level: In the first game, the team has to evacuate a crippled naval vessel before it sinks, while Jean Grey tries to hold it together telekinetically. An escort mission with a strict time limit and one of your most powerful characters sidelined? Yay! And then Wolverine accidentally stumbles into ankle-deep water and instantly drowns and you have to reset…