Fans Think They Know Who the Dad Is After "How I Met Your Father"'s Cancellation

Some fans had a theory that Barney (Neil Patrick Harris) turns out to be the father of Sophie's offspring! While the womanizer had a baby girl named Ellie with an undisclosed mother in the "How I Met Your Mother" season nine finale, it is possible Sophie will later meet Barney, fall in love, and have a kid with him who's a half-sibling to Ellie. This theory seemed kind of ridiculous — until Barney showed up in season two. But Sophie's son had no idea who he was, and he and Sophie don't stay in touch after their brief but impactful encounter, basically confirming he's not the father.