Janduin is tall and blond, somewhat taking after his mother's side.
All four siblings could channel since childhood and constantly embrace the True Source. This might refer to the oddity in Min's viewing of Min when she indicates that there is something odd with the children, what she cannot see, only that they are healthy.
Given special privileges as children of the Dragon, Janduin and his siblings were present at the council of chiefs which decided to go to war with the Seanchan  in that version of a possible future thread what Aviendha sees in the glass ter'angreal of Rhuidean. It is unknown whether that actually become reality.