Poor Neville Longbottom is one of those kids who just always seems to be struggling - struggling with the terrible burden of the past, struggling to remember the password into Gryffindor, struggling to just walk and breath at the same time. He's an awkward kid, but you keep telling yourself he'll probably grow out of it.
Neville's parents, rebels against the evil Lord Voldemort, were tortured to the point of madness when he was very young. After that, he was raised by his stern grandmother (how stern? This is a woman who wore a stuffed vulture on her hat. Suggests a lot about her attitude, I think).
Many of the students at Hogwarts School of Witchcraft and Wizardry have pet owls, but Neville has his little pet toad, Trevor. It's a little-known fact that students who have toads instead of owls also use their pets to send messages to people far away, though instead of taking mere hours for delivery, it takes several years. Also, the messages never arrive. Also, the owls eat the toads.
Neville eventually found something he really excelled in: Plants. Neville was a wizard in herbology class (OK, technically even the bad students were wizards, but you know what I mean). Being good with plants may seem just as nerdy as being bad at sports, but Neville proved that attitude wrong in the final battle of Hogwarts when he summoned great vines to come and strangle the life out of Bellatrix Lestrange, the very witch who had long ago tortured his parents.
Wait... that's not what happened? Well, it should have.