I just noticed this while looking at my like count, but I'll answer anyway: Yes, there is.
Some people say it's just Lyn remembering the player (YOU) who "controlled" Mark in FF7.
Other say Mark was indeed Robin, who travelled to FF7 realm running away from Grima via Magical purple Gate (that's why I don't like how they handle dlcs in the game), then came back after some time, starting Awakening storyline.
Others say that Mark's decendant went through that gate and reached Awakening, or that Mark was already from that Realm to start with.
Other says it's actually Morgan (because Morgan's name in Japanese is Marc, pretty similar to Mark). I think the thingy with the names are just some kind of reference, though.
She means that Robin should be the Seme and Chrom the Uke

If you don't know what these words mean, go google it. I dare you.
Yeah, and then there's these mods that needs other mod textures/faces/hairs to work propely and not crash.
And the ones that crash with each other. I had Hell organizing all these mods back in the time, because I had a lot, and it makes updating/organizing/placing them way more troublesome and difficult than it's worth, sometimes.
I still remember all the Skse ordeal I had.
@Edit:
Also, for all pokemon fans in this thread, I just found something amazing :v