Triangle - Buffy the Vampire Slayer - was created on 2001-01-09.
Oz - Buffy the Vampire Slayer - was created in 1997.
Faith - Buffy the Vampire Slayer - was created in 1998.
Trio - Buffy the Vampire Slayer - was created in 2001.
Him - Buffy the Vampire Slayer - was created on 2002-11-05.
As You Were - Buffy the Vampire Slayer - was created on 2002-02-26.
Master - Buffy the Vampire Slayer - was created in 1997.
Spike - Buffy the Vampire Slayer - was created in 1997.
Satsu - Buffy the Vampire Slayer - was created in 2007.
Unaired Buffy the Vampire Slayer pilot was created in 1996.
Helpless - Buffy the Vampire Slayer - was created on 1999-01-19.
Entropy - Buffy the Vampire Slayer - was created on 2002-04-30.
Shadow - Buffy the Vampire Slayer - was created on 2000-11-21.