Cassian: species=illyrian, 6'8" tall, shoulder length black hair, muscled, broad, has bat like wings+can fly, strong, general of the night court, war hero & legend, 'Lord of bloodshed', funny, caring, loyal, insightful, sexual, banter, protective, brown eyes, handsome, red syphons for power 
Azriel: species=illyrian, 6'5" tall, muscled, less broad than Cas, has bat like wings+can fly, shadowsinger+night court spymaster, has burn scars, black hair, brown eyes, blue syphons for power 