As quoted, the rules to the VG edition of Titan indicate that all characters other than the Titan are generic.
That is correct.
However, the angels are clearly color-coded by legion (3 each) and I'm remembering them being handed out with the titan and legion counters when I'd played the AH version.
Thats only done for convenience. That way everyone had the angel they need at the start and a supply of 2 more.