Grim Reaper Hybrids

Grim Reaper hybrids are the children of a Sim mother and the Grim Reaper. The instance is very rare, and Nervous Subject is the only known case of a successful hybrid. Presumably, a Sim has to maintain a lifetime relationship with the grim reaper for long enough to conceive a child, however, most users sloppily use the Tombstone of Life and Death to spawn a Grim Reaper that cannot be deleted from the household, corrupting the lot when the final Sim dies. The safest known method of cheating to get a child is to wait until a member of the household dies, creating a pregnancy in a female Sim using the Tombstone of Life and Death while the grim reaper is on the lot. All known methods short of legitimately managing to Woohoo with the Grim Reaper leave no memories behind, however, modifications exist to plant these memories into Sims.

In The Sims 3, it was possible until the 1.3 update, to create a Grim Reaper hybrid, since the Grim Reaper appears in the Sims relations. A female Sim with a high enough relationship with the Grim Reaper could have a romantic interest with him, allowing WooHoo, and conception. The baby would be completely black.