That's oddly enough how I felt (or similar) to the Super Mario movie. had it had a different title, but same plot and such it would have worked better. i enjoyed it. but come on... Dennis Hopper as Koopa, and not in a suit or something that looks like Koopa? And Big Bertha's an overweight African-Mushroomland character and not a fish?
But I will say I detest talking dog movies on a whole. I LOVE cartoon dogs, Snoopy, Odie, Scooby Doo, Ace Hart, Mr. Peabody... etc. but something about a live action talking dog is just... it doesn't work for me. Mainly on the level of the dog having to make millions of puns about how he's a dog.
I was seriously considering giving this movie a chance. but the more previews I saw the worse the film got. Everything except the fact that when he changes in a phone booth, and the booth exploding they got wrong.
I mean, the #1 screw up is that Underdog (as well as Polly, Riff Raff and Tap Tap) is an anthropomorphic dog humanoid that (without question) walks amongst humans. He can support himself, and he doesn't need doggy things. And as such, too many things would have to be missing. The ring with the secret compartment he fills with the Underdog energy vitamin pill. It just doesn't work on so many levels.
Somehow I feel if they put Battyman in the film, it would be a woman in a bunny suit or something.