This post has actually killed me because I can’t get over the idea of Dad!Len
like maybe he found out he had a kid after the mum died or something and Len just can’t let this three year old boy stay with the asshole step-dad so he takes him in. And the only one who knows is Auntie Lisa who absolutely spoils the boy.
So Len has a babysitter for when he and Lisa both have to ‘work’ at the same time, but otherwise Len is always there playing with his boy who he loves more than the world. He gets him loads of toys and takes him to get ice cream and watches disney films (he insists that he hates them and that the kid decided Frozen was his favourite all by himself, but Lisa knows what’s really going on)
And this little boy is literally the most important thing in his life, because he is determined to be a better father than his was, and if he can give this kid a great life then it makes everything he’s gone through somewhat more worth all the pain.
and when his kid sees the flash on the telly he gets all excited and len makes sure to tell his son that he can be a hero like the flash someday too