I'm pretty sure you kind of got this idea from me.
@Video_Game_King: Oh yeah! I remember now. Something about how frequent kidnappings are in video game land, right? It's close enough that I should credit you somewhere.
Sort of. More like "how can these toddlers be kidnapped and have absolutely no recollection of it, and why is this appearing to be so common".
@Video_Game_King: I checked the wall post and I think I would've struggled coming up with examples of video game characters who were taken or kidnapped as a toddler and grew up in an odd environment while being oblivious to their origins. Or maybe not, since apparently it's happened to everysinglevideogameprotagonistever.
Oh shit. I would've limited it to "working for the enemy" instances, but somehow, I'm pretty sure Link would still get on there. Somehow.
Also, I just checked the TVTropes pages for Altenna and Terra, and neither one had a good trope for this, so research might've been difficult.
@Video_Game_King: Without the assistance of a TVTropes page for the thing to make a list about, that's me, Gameological Society and half of Cracked out of commission. We'll regroup on a fresh idea for next week, which I will then obliviously take all the credit for.
And just now, I came up with another example for our list that will never be.