In Z Gundam:
Kamille turning around to look at Emma's body, calmly saying "Kamille, Zeta, ikimasu". A phrase they say almost every episode. However, given the context, it's just simple and effective in showing his resolve, it's him finally accepting his role as a New type.
In V Gundam:
When Reinforce's old men decided to kamikaze, when they say something to the effect of "let us oldies pave the path for the young ones". That scene always send me in tears.
Bonus point- while she's considered one of the most hated woman in Gundam, I can't help but feel some sympathy for Katejina. She was a typical teenage girl being thrown into a war, she was captured and wasn't rescued, she watches as Uso becomes more prominent and clearly has picked the right side, she watches Uso grew apart from her. Cut her some slacks, she was seriously broken by the time of the final fight.
In Turn-A Gundam:
In the final fight, after Gym Ghingnham gave his entire whine about how it's not him, it's her, and how Lohan can never defeat him. Lohan turns his Gundam around, shouting "I'll defeat you" always give me goosebumps just thinking about it.
Sorry, no gif, use your imagination.
Also sorry, I watch in Japanese so if I got the names or phrases wrong, please forgive me.
