Disgaea/Awesome

Hour of Darkness

 * Etna had one when she used Laharl as bait for her blackmailer, told him that she had never truly been under his control and proceeded to give him an asswhooping so bad that he ended up literally begging her to let him become her slave if she only spared his life.
 * For this troper, Etna's moment came a little bit later - when she shoots two Prism Rangers in the middle of their Transformation Sequence. It's not a scene that's important to the plot, but it's still awesome.
 * Also a mild CMOH for her since she avoided killing them. shows a fair amount of Character Development, since before the last chapter, she'd have killed without blinking.
 * Also a crowning moment in-game: the boss battle against said blackmailer is right after a particular stage where you can level up VERY quickly - so your entire party and Laharl in particular is probably going to be vastly overleveled, resulting in a spectacular curb stomp battle, accompanied with amazing music.
 * The music in the background just clinches it. This game introduced me to Tsunami Bomb and they are still my favorite band.
 * Laharl gets some of the most brutal moments, such as ... and, most particularly, the ending: Come on, you know you got a little shiver at that.
 * "Your new name is Mid-boss".
 * Mid-Boss, incidentally, gets one, too. At the end of Chapter 13, as General Carter is getting away from the heroes and is panicking about how powerful demons are, Mid-Boss shows up and demands to know who Carter was referring to when he said that "he didn't tell me they were this powerful". Unfortunately, he quickly ruins the moment by congratulating himself for being so awesome.
 * He also has an attack that qualifies: Meteor Impact, where he jumps up into the air so damn high he's able to hijack a passing meteor and sends it towards his opponent while riding on top of it and laughing maniacally.
 * Flonne's speech against in the final chapter.
 * Speaking of Batman Gambits,

Cursed Memories

 * Adell takes Heroic Willpower up to eleven when he willingly takes a giant-ass lightning bolt from a borderline-Eldritch Abomination Overlord Zenon full force and barely even flinches. As we've said before: Nothing stops Adell from keeping his promises. Nothing
 * He also Bright Slaps the aforementioned Overlord Xenon before that. And it worked.
 * Axel's ridiculously crazy stunt that he pulls through the entirety of the last chapter of Disgaea 2 instantly promotes him from comic relief to Badass as he manages to get the one up on not only Overlord Xenon, but almost every Dimension Lord in the multiverse simultaneously.
 * The Disgaea fandom has concluded, upon reading the manga version of the Hopeless Boss Fight with Etna, that Manga!Adell is GAR to the point of absurdity. Yeah, he still technically loses (let's see you take a lvl. 1000+ boot to the head and survive), but not before delivering a kick so hard that it drills the Demon Lord's face two feet into the bedrock.
 * In the same manga, the Disgaea trio's Big Damn Heroes moment. Zenon captures Rozalin and has this huge Rifle Demon blast away Adell's family. All hope seems lost until Etna shows up and deflects the blast away with a single swipe of her spear. It doesn't end there because Laharl jumps out of a crowd of demons in his Skull robe disguise, burns it off in a way that would make Superman proud, and smashes the demon's face with a single punch. Then, to top it all off, Flonne, who was disguised as a kunoichi, quickly changes into her fallen angel outfit and delivers a barrage of love filled arrows.

Absence of Justice

 * Mao gets one for what is probably the most awesome defeat of a final boss ever:
 * This is taken a step further when you realize what said final boss' motives are. Say it with me:

A Promise Unforgotten

 * Big Damn Heroes

"I can't be his real daughter... I knew that from the start... But I still envied you...! I hated you so much! So I killed you to make you disappear from this world! But you still had the nerve to come back afterwards! You're still trying to have Daddy all to yourself!
 * One has to wonder what ratio of utter delusions, Unstoppable Rage, and sheer determination allows Fuka to be as fucking dangerous as she is, but it was pretty much narrowed down to those three ingredients (and maybe some actual acceptance of Desco) when

Fuka: You... Really...?

Desco: Des X... Daddy is also Big Sis' daddy. It's sad, but we're...

Des X: Shut up! Daddy is my daddy! He's mine and no one else's! Fuka... Desco... and your stupid friends... you're all eyesores to me! DIEEE! *enlarges to Final Boss state*

Fuka: Huh...? That's the reason you killed me...? *flares up a battle aura* Screw you! Seriously!!! You really pissed me off now! "Daddy! Daddy!" I have no idea what you find so great about that stupid old man! I'm gonna beat you up and put an end to your fantasies!]]"

"Valvatorez: Do you see now, !? This is the power of demons, angels, and humans! A power that's much stronger than yours, the ties of our camaraderie!"
 * Upon defeating Valvatorez exclaims the following to.


 * Heck, any time he makes a Rousing Speech counts as an Awesome Moment, a Heartwarming Moment, or both.

Others

 * Asagi's in Prinny 2.  Doubles as a Tear Jerker and eventually.