I don’t know who could be Lin’s dad, though I know it’s not any of the main characters from ATLA. Just going off looks, the only person we know in canon with dark hair and pale skin is The Dark One, but I don’t think he’s huge enough to fit the bill.. Lin is so.. I mean look at her profile:
That’s the hardest looking 20 year old ever lmao.
Her model size changes around a lot but I’m hoping the most intended version is where she just has a larger frame than Toph and Suyin.
So I dunno, unless The Dark One starts gettin bulky and tall, my best guess for Lin’s father is a divine adonis who wasn’t around because he ascended back into the realm of the gods. (Though I admit, there is some great inherent humor in moo goo gai pan or w/e being Lin’s dad)
Suyin is less of a mystery. Actually, it’s not a mystery at all it’s Satoru.
In any case, I really hope the fathers have very little impact on their story. I just want their story to just be about the three of them. They’re setting up something with Toph and Satoru in the comics and I really really hope it’s not some great tragic ordeal. Like, it can still be romantic and not tragic if and when they don’t end up together. I want the only big sadness in Toph’s family to come from their relationships with each other, not some dude related shite. I want Toph to be single because she didn’t want to marry them for whatever reason, not because they were some great love who died or ran out on her or whatever else.
I think Toph’s relationship with her parents and her friends will/would have had more impact on her life and personality than her relationship with whoever fathered her girls.