Veedramon is one of my favorite digimons in the franchise.

It's so underrated, it's practically criminal, especially if you read the V-Tamer manga where he co-stars as Tai's partner instead of an Agumon. He's basically what you get when you take Ash's Pikachu and make it a Digimon (in that he's able to take on foes a lot stronger than he is evolution-wise and win).