Emil snapping at Marta for constantly trying to make him something he's not, since up to this point he'd been super timid and scared.
Ratatosk Mode Emil in Luin, knocking out those three guards in the span of a second.
Ratatosk Mode Emil: I'll teach you the true meaning...of divine punishment!
After beating Magnar, Emil just beats the ever loving crap out of him.
Ratatosk Mode Emil: Where's your divine punishment now? Go ahead, SHOW IT TO ME!
Emil's Mystic Arte, Devil's Hellfire, followed by Ain Soph Aur.
Mix of Awesome and Crowning Momentof Heartwarming, but both Emil and Ratatosk Mode Emil trying to convince Marta that she needs to face her father Brute, who happens to be the leader of the Vanguard so they can get Solum's core whilst they're protecting Mizuho from the Vanguard. Emil wasn't kidding when he said they wouldn't enter the village.
Towards the end of the game, Emil replacing his Ratatosk mode in battle. His calm and confident attitude is the perfect culmination of his growth from pushover to hero.
Followed by Emil fighting Ratatosk in a Battle At The Center Of The Mind and finally winning Ratatosk's respect and acceptance. It's double awesome if you use Devil's Hellfire on him.