Johnny Yong Bosch is a military leader with an awesomely flamboyant cape? Add in a mask and you've got Zero! Not to mention his style of civilian dress and the way he kicks people call to mind Ichigo Kurosaki. Plus he dreams of being in a rock band, while JYB has sung vocals for his own, Eyeshine, for years!
Playing Against Type: None of the actors so far, but Shinichiro Watanabe himself. His previous works are more seriously-toned and, with the exception of Kids on the Slope, mostly stay within the action genre (though granted, Cowboy Bebop and Samurai Champloo, two of his most famous works, do have their comedic moments). Space Dandy is more of a wacky action-comedy, throwing the serious tone completely out the window.