The dark past, the rising present and the end

ok so i can see u guys don't understad the title so bear with me.
the 2 guys u see are Isaac but the one in robe is mystery... not even i dont know who he is.
on the right u see Isaac in the darkest past meaning that he was a guardian defending the world from darkness. the rising present is when the keyblade war was about to begin. and the end is the start of he abyss, the great war.