The man who watched over the door of the tent (of Isaakios 1)
τὸν ἐφεστηκότα τῇ πυλῇ τῆς σκηνῆς. Psellos: Chronographia VII 22.14
Quick-witted and energetic as well as noble, a good speaker, better at keeping silent and better again at reflecting ... who had inherited nobility and steadiness from a long line of ancestors
He was most noble, reasonable and moderate, attracting everybody's favour, quick and eager to help, but reluctant and slow to punish, the evidence of his virtue being abundant, not least in his decline of the imperial throne
The emperor (Basileios 2?), to whom he had been entrusted by his dying father (Manuel 119), provided teachers (Anonymi 5020) to form his character and instruct him in matters of war and military tactics