I picked him on the Black ROM I had. He's not that bad. I had bad luck with Mijumaru at the beginning of the game though. v_v I'm gonna start with Taaja on my English Black, maybe. But there's a lot of grass types I like this generation, so I might not. >:
Flash Fire is good, but you have to consider that people probably know better than to even hit Arcanine with a Fire-type move anyway. Heart of Justice is kind of weird though. The Musketeer trio got it, but they're all Fighting types, so why would you try to hammer it with a Dark move in the first place? Oh well, I'm not competitively savvy anyway.