HoO 'Angels' Picture

In the Heroes of Olympus series, Thanatos and Cupid are shown to be counterparts of each other. It seems that Love and Death share some similarities. Anyways...
HoO belongs to Rick Riordan.
Thanatos and Cupid belongs to Greek/Roman mythology.
nyx
Thanatos
HoO 'Angels'
Thanatos
Somnus