I've played part of one FE game on the GBA, I'm mainly familiar with the series through its representation in the Super Smash Bros. series of fighting games. In my SSB fanfic universe, not only do I pair Marth with Ike, but I also have him go after Zelda to p*ss off Link, but I have not established his orientation. I have established orientations for Ike and Male Robin, which, in my universe, co-exists with Female Robin and is in fact her twin brother. I ship Ike and Male Robin together as well.
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Though I die, La Resistance lives on