Remember that guy who was stuck in the belly of that beast when they had to get crystals for the ship? He resembles Prince Lotor an awful lot. You don't think that maybe Keith saved the Prince of the Galra that day? Or at least a subordinate?
That was Acxa, one of Prince Lotor's generals.
Yeah, that was most likely Acxa.
In a fight with lotor and his generals Keith recognizes some of the moves from one of his generals. So it's most likely not him but a general
What do you think?