In FE7, I had Guy go in the arena, he was about to die so I made him retreat but then he criticals and the enemy misses and he would've finished him off the next round but he already left. XD
In FE7, Matthew was running around to try to steal some items that the enemy pilfered. But a shaman came by hit him and did like 12 damage, he was fine. Then another shaman comes with luna and did a pathetic 6 damage with a 2% critical chance... guess what happened?
In FE6, I let Treck die in his starting chapter to the cavalier reinforcements. I was fine with it, a bit sad. I arena abuse Rutger to level 20 and look through my team to see who had the Hero Crest and... it wasn't there. T.T After a minute, I figured out Treck was holding it.
In FE8, I went to a monster (the centaur ones) since I thought he had an axe and he would have weapon advantage. I decided to just let the centaur come to him and he had... a Swordslayer. XD