Highschool DxD/YMMV
- Anticlimax Boss: Even being turned into a chimera, Kiba one shots Freed like nothing.
- Complete Monster: While there are quite a few the crown has to go to Diodora Astaroth. It's implied that he raped all the pieces under his commend and also was about to rape Asia.
- Crazy Awesome: Seriously, if he wasn't the protagonist, Ise would be dead by now with all the crazy stuff he can pull off. To wit, he has: done a rescue mission to Asia by punching out a fallen angel so hard she bursts through the wall/out the window in the anime, barged in an engagement party full of devils to take back Rias, invented Dress Break and Bilingual out of pure lust, defeats Raiser, an immortal phoenix, not with the use of his newly dragon power, but by using a holy cross and holy water which he can't even use because he's a devil, but is capable to do so because his arm is a dragon, powers up with lust and by using Rias' breasts, accidentally summons the breast god (well breast fairy but still definitely counts), is capable of breathing fire to a shadow opponent, and was able to make the past users of Boosted Gear come back to the light and make them stop relying on Juggernaut Drive with breasts. If there's one thing Rias recruited to her group, it's the fact that she recruited the craziest character of the series. No one out-crazies Issei at all in this series. And yet somehow, he's also the Only Sane Man in the group (when he's not doing his lecherous ways).
- Rias may count to a lesser degree too. Who's crazy enough to be willing to bare her breasts open just to let Issei get a power up in public viewing!? Also renovate Issei's house from a simple house into a six-story mansion with a three-story basement and an elevator overnight!?
- Azazel too can count as one. The craziest idea he pulled off is that to capture the Issei clones he accidentally unleashed, he suggests the idea of using fishing on them. With porn as the bait.
- Crowning Music of Awesome: Kakusei. That is all.
- Ensemble Darkhorse : Mil-tun has appeared in only a few scenes, and is one of the most discussed characters in the series. Take note, he's a Creepy Crossdresser.
- Hilarious in Hindsight: Vali notes back in the fourth volume that the current red-white dragon rivalry was a bit unfair because Vali's the descendant of the old Lucifer and Issei's the son of a common Muggle. Vali wishes that Issei's parents were a bit special so they can have a more interesting match. Now that Great Red and Ophis are both Issei's parents by proxy by creating a body for him from Great Red's flesh and Ophis' powers, let's just say Vali's wish came true. Though seeing as Vali's a Blood Knight, he's probably pleased with the development.
- Ho Yay: Now has it's own page!
- I Knew It!: Some people got it correct when they thought that Great Red was going to help out both Issei and Ophis. No one however thought that Great Red has a Delinquent personality.
- Lawful Neutral: Sakra Indra. Will help out The Alliance just so they can take care of the Chaos Brigade faction, but won't do anything else after that.
- Moe: Lots of the girls in the series.
- Sleeper Hit: Of the Winter 2012 Anime. Heck, no one expected that the series would even sell 10k in its first week.
- Tear Jerker: Ise's death in volume 11 was definitely one.
- They Changed It, Now It Sucks : Most fans opinion of the anime. At least, until they saw the final episode and then changed their minds.
- True Neutral: Ophis; if it's not about defeating Great Red, then she wouldn't care about anything else. That is, before meeting Issei.
- What an Idiot!: Most people seeing Ise being his usual self On another note the 2 dragons Red welsh(Ddraig) and Vanishing Dragon decided during the great war to fight God Satan And the leader of the fallen angels....they were quickly dismembered and the sacred gears are whats left of them stored.