Steve/Bianca
They made a pact. Zeus, Hades and Poseidon to not father anymore children. Because apparently, they like to come down to the mortal world and mate with mortals.. regular people down here. It was some really horrible prophecy and they wanted to make sure it didn't come true.
So Hades was begging my mom to go into hiding with us but then Zeus got to her first and killed her.
After that, Hades had our memories wiped and put us in a boarding school, and we thought our parents had died and we were just living off a trust fund. Some time later, he had a lawyer take us out of the boarding school and put us in hotel. This Lotus Hotel and Casino. We stayed there for what we thought was a few months but time works differently there because there's enchantments around and a bunch of games to distract everybody that came in. We were in there for about 60 years, and we just hadn't aged.