Have to recommend this one, just because it has been one of my favorites for about 45 years.
This book has it all, heroes, villains, loyalty, espionage, action and even true. Also it has such incredible characters and dialogue.
Animation and story are both amazing. Traumatizing for a child, I first saw it at 8yrs old I think, but it stayed with me none the less. I have watched it a couple times as an adult, holds up well.