Popka's quick-temper, talent for thievery, and no-nonsense attitude seemed to clash with Lolo, who as a priestess-in-training, appeared slightly naïve and rather prude-like in her actions. He doesn't worry about most things, and won't hesitate to insult people he finds mean, or bratty, but mostly with Lolo. Despite his defects, he's rather caring to Lolo, and he befriended Klonoa rather quickly. His rudeness and temper are somewhat reduced later on as he was shown happy to see his old friend again and helping Lolo out. He also refused to part with the bandanna Lolo gave him and treated her to lunch. He was also shown worrying for Lolo after rescuing her from Nightmare.

I expect a child-like New Yorker or even a Brooklyn accent for Popka, it fits his character and the way his dialogue is displayed as.