In volume three, he gives and epic Shut Up, Hannibal! at Kokabiel when the latter tries tempting him to join the fallen angels. Too bad his rival stole the spotlight for defeating Kokabiel.
The fourth one gets him to curb stomp his rival in the series when the latter pushes his Berserk Button. Though it was obvious that Vali was definitely holding back against him.
Vol 5 has Ise learn to activate BB on his own, and uses it to own Kuroka, preventing her from taking Koneko.
He gets two in the sixth volume. Two of them curb stomping both enemies when both decided to insult Ise's friends.
Also frees Asia from becoming a nuke to wipe out the entire leaders of the three factions by applying Clothing Damage to her. Yes, Clothing Damage as an awesome moment; found only in this series.
In the seventh volume, he gets Mjolnir! And he uses it to bash Loki with the combined power of the recently-resolved father-daughter-problem when they cast lightning on Mjolnir.
In volume nine, the party is losing to the Hero Faction, and Kunou's mom is about to be used to summon Great Red. Then Ise activates Illegal Move Trianna for the first time, and nearly kills Cao Cao with the first three forms. And when Cao Cao and the others retreat from Ise and the absurdly powerful Son Goku, Ise shoots Cao Cao in the eye.
To put this into perspective, the author was itching to write this fight.
Can't forget how he fights off his predecessors Madness Mantra to activate Juggernaut Drive by making up a Badass Creed on the spot..'
Volume 12: He becomes Ultraman huge when he comes Back from the Dead and proceeds to wipe out Annihilation Maker's monsters, the same monsters that ultimate devils couldn't even scratch at all.
Oh, and he gets to solve all of his club members Dark and Troubled Past baggage, something Souna notes as an accomplishment.
Befriending and becoming the son of both Great Red and Opfis, two of the strongest beings of the entire series counts as this.
Kiba
He gets an overall one for actually being able to keep up with Ise throughout the series.
It later turns out he acquired a SECOND sacred gear at the same time. Which is at Balance Breaker the first time he uses it.
He one-shots Freed, turned into a chimera, in Volume 6 then impales his head without hesitation. Ise notes he even was jealous of Kiba's cool moment.
Defeats Siegfried in their second match by disguising himself as one of his clones charging towards Siegfried.]]
Gains an Offscreen Moment of Awesome in volume 12 while using Issei's rampage as a giant man in an armor, he rescues the kids who are held captive by Jeanne.
In the first volume, she kills three fallen angels. OFF SCREEN.
In the Anime it happens on screen, and it is awesome, She kills all three at the same time with a single attack.
And then completes the set by vaporizing Reynalle.
In vol 6, she and Akeno get in an argument over who gets a date with Issei. When the enemy tries to interrupt, the girls deliver a twin Off Hand Back Hand for their troubles, taking out all three of the attacker at once.
Asia
Being The Medic, she doesn't have a lot of these, but the ones she does have are pretty sweet.
She normally stays pretty calm, regardless of the situation, but when Diodora insults Ise, she slaps him across the face.
Akeno
She is Rias' Queen, and the daughter of a Fallen Angel. She is also a sadist.
In volume 4, Katreya has his arm wrapped around in tentacles and will blow him up if he doesn't get rid of it. The problem is that the tentacles themselves are invulnerable to damage so what does he do? He rips out his arm and impales Katreya with his spear.
In volume 5, Azazel teaches Issei what it takes to become a first rate pervert, subverting the usual Hot Springs Episode cliches.
He gets to show off his power combined with drinking dragon blood at the climax of volume 4 when he stops time and drains his enemies magic, allowing Ise to apply dress break on them.
In Volume 12, he got pissed so badly at George when he was told that Issei died that he devoured all of George's mists.
Xenovia
Killing two of Diodora's Rooks via Pillar of Light definitely counts.
The other characters (can't leave out the other characters now can't we?)
Vali curb stomping Kokabiel counts as one when the Gremory group at that time can't even faze the latter.
Later, he goes one on one against Fenrir, a wolf that can kill a god. He wins and subdues it.
Odin's fight against a number of devils. He just casually taps his staff and they all die.
Sirzechs shows off how powerful the Power of Destruction is on a small scale instead of how Rias uses hers. He just puts a small ball of his power on Asmodeus mouth and kills him from the inside.
Souna almost winning against Rias in their Rating Game when she takes advantage of the rules stacked against the Gremory group in her favor. She almost could've won too if it weren't for Ise's new abilityBilingual.
Saji gets one for being able to keep a single thread alive and attached to Ise before getting taken out of the game counts one as well. To the point, Odin praised him and was awarded the MVP of the game.
The original Son Goku shows up right as Ise finishes pounding Cao Cao. He proceeds to level the rest of the Hero faction in seconds, and blocks the True Longius, the strongest weapon in the series, with one finger. What.
He may be a villain at this point but, Cao Cao going One-Man Army against an entire crew of angels, fallen-angels, and devils while protecting both George and Samael counts as one. Take note, he's just a human being. And he was winning!
Sirzechs in Volume 12. Oh boy, making a godcower in fear of him. And it was freaking Hades too!
His pal, Ajuka, also gets to be awesome in this volume and proving why he's The Rival to Sirzechs. He defeats all of the Old-Faction devils Siegfried was accompanying while sitting down in his chair.
