Suggested by Destroyer Jack Sparrow may have some immortality going for him but it really doesn’t help all that much when you consider just how much more powerful Scooby Doo is. The yellow power ring turns Scooby from a normal dog type fighter to a serious threat here. Try as he might, Jack will not be able to escape Scooby’s attack range. It’s just not going to happen, the ring is too versatile. It’s also not like Jack is particularly fast either. He just has human stats which won’t cut it here. Scooby Doo wins.