The "Good Ending". Adell manages to snap Rozalin/Zenon back to her senses with a Cooldown Hug and kiss as the screen fades to white. The first two C Gs in the credits show her rampaging against the party, implying she didn't take it TOO well
And then we have the full Prism Ranger battle in the second game. Prism Orange alone makes it funny, but Adell's reaction, made particularly funny by the delivery:
Adell: Okay, man. Calm down. I'm just saying, when I look at you guys it makes me want to cry.
And also after the battle:
Rozalin: "Hmm. I can respect your spirit. But that's all. Just your spirit." Red: Then we will allow you to be the guardians of our task! Since you're way stronger! Take this! It is undeniable proof of our blazing friendship! * Adell has received the title, "Prism Black"!* Red: Now you are the 8th Prism Ranger! The fate of the Champions of Justice, and the world, rests in your hands! Adell: What a crappy reward... Rozalin: I don't get anything...? Well, can't I be Prism Pink...
To their credit, at least the Prism Rangers are in-synch in English. The Japanese version gets an extra Crowning Moment of Funny for not putting them in-synch.
"I'm a huge fan! Please give me an autograph!" O_O
The heroes need a demon's nail to perform a ritual to summon the most powerful demon in the world, presuming it will be Overlord Zenon. So they track down Etna, who gives them a press-on sticky nail as a prank, unaware of why they wanted it. The group performs the ritual unawares and summons... Etna, who as a result of the incorrectly performed ritual has experienced a huge level drop and so forces herself into your party to make them back.
This leads into possibly the funniest chapter in the game once the Prinnies find out about it after coming to look for her...
Prinny: Now that Master Etna's level is so low, there's nothing left to fear! Freedom at last! Good bye, dood!
Rozalin trying to mislead Adell in the beginning of the game. And then they found her mansion...
Rozalin: My father is...over there. Adell: ...Are you sure about that? Sure looks like you're just pointing randomly. Rozalin: What? You don't trust me? Adell: ...I trust you. I did give you my word.
In the final chapter, the protagonists are all having their own private thoughts on the coming battle with Zenon and what may happen afterward. Taro notices this, and tells Hanako that the two of them should try it. While Taro's is sweet, Hanako's... needs work.
Hanako:(Introspective) I will defeat the fake Zenon, thrusting me into the highest rank of demons! I will be as cool as Etna, but twice as sexy! (Normal) Whaddya think? Taro: Uh, I guess that was serious-like.
The news cast before the last chapter. Having been ditched by Axel, Plenair simply gives a side glance to the mayhem, then stares back at the player/viewer.
Defeating Zetta causes Adell's title to change to "Badass Overlord". Adell's reaction is priceless.
Prior to that, Zetta vaporizing Tink with his namesake Zetta Beam. Moreso in the Japanese audio, due to Zetta dragging out the name of the attack far longer.
In Dark Hero Days' DLC, Ash, whose summoning Ingredients includes an used Plunger. The characters refuses to come near him.
In another DLC, the ingredients for Marona is Taro's game he spent on. Bonus points when Marona was about to Mace Ash if he's present in the party.
Adell: ...If the developers know also, they will faint too.