Guile and Ken

Inspired by some discussions with my buddies about Digimon and Chrono Cross. I draw both Guile and Ken because they have a lot in common.

Ken was once the Digimon Kaiser, and in the present, Ken feels extremely guilty about that and even wishes to see his Kaiser self getting beaten up by the digimon he hurts.
Assuming the 'Guile is Magus' theory is true, Guile was once Magus the demon lord, and in the present, Guile denies his identity as Magus.

Ken's digivice is black in color, and in Digimon Digital Card Battle, he uses a dark deck. His partner digimon, Wormmon, is a virus type digimon (also a dark digimon in the said game). In the anime, he's on the good side.
Guile is a black innate (dark type) playable character in Chrono Cross.

Ken is a nice guy after reverting from the Kaiser persona, although he's a bit of a loner.
Guile is very polite in speaking. He spends his time standing alone at the corner of the bar.

I may be missing something though.