Dualism? Lol, you sure it's not a shitting plot device to get guys to watch a chicks cartoon? Cute, cute, cute, cute, oh better be serious *ahem* or no guys will watch this show but fags, "It's like he's two different people" LOL, 1 min action, cute, cute, cute. To each his own just don't try to kid yourself or me. Thank goodness he can power up when he has to.
Any dualistic symbolism would be him being the good fag and Knives being the evil fag.
Durr Durr, evil twin brother. LOL.