|Appears in||Call of Duty: Black Ops III|
|Marks||Mark of the Beast|
|Death||April 26th, 1944, Morg City, United States of America|
|Weapon||Bloodhound, any weapon obtained by the player.|
|Equipment||Throwing Knife. Knife, Fragmentation Grenades|
|Voice Actor||Jeff Goldblum|
|Level||Shadows of Evil|
- "Born into enormous wealth, the magician grew up surrounded by lackeys and sycophants… and a lifetime of constant praise and attention has only fueled his deeply misplaced arrogance."
- — Nero's bio
Nero was once a very successful magician in Morg City, but his popularity sunk quickly for unknown reasons, going as far as being crowned "Worst Magician of the Year" by the Magician's Weekly magazine. In addition, he is married to a demanding woman, who always finds a reason to complain about him. When finding out that his wife has accumulated a large amount of debt, Nero murdered her in a staged accident, in order to receive her insurance money to pay off all of their debts.
On one night, Nero pays a visit to the Black Lace burlesque club, where he meets the boxer Floyd Campbell, Detective Jack Vincent, and the dancer Jessica Rose. During Jessica's performance, the four of them are mysteriously knocked out cold. Each of them later wake up in different areas of Morg, finding their left hand branded with the Mark of the Beast. They discover zombies roaming around the city, and attempt to escape, only to reunite in an alley later. A mysterious figure calling himself Shadow Man then asks the four characters to complete the rituals to atone for their sins. Nero collects his ritual item, which is his lawyer's pen, and later sacrifices him as part of the ritual. After finishing all the rituals, the Shadow Man reveals that they have opened a gateway to freeing the Apothicon on their dimension. Nero begins to remember all of the events being depicted in a book, located in his lair. After reading the book, they find out the true nature of the Apothicon, as well as the Keepers. The four then proceed to summon the Keepers under the Rift, where they work together to "kill" the Shadow Man (unknowingly to them, only his physical body was destroyed, while his soul is preserved within the Summoning Key). Using the power of the Keepers, they destroy the large Apothicon creature roaming the skies of Morg City, freeing their dimension from the Apothicon's wrath. As the Keepers return the key to them, Edward Richtofen quickly appears and takes it. He thanks Nero and the others for their efforts, then teleports away. The next day, the Apothicons then destroy their dimension, killing everyone who lived in Dimension 63, including Nero.
Main article: Shadows of Evil/Quotes#Nero Blackstone
- Nero is similar to the real life 20th-century magician, Harry Blackstone Sr.
- He apparently likes Jessica, as he tries to introduce himself to her during a certain round. However, Jessica doesn't return this feeling.
- He tries to get along with Jack Vincent, however the latter hates Nero.
- Nero seems to be neutral towards Floyd and even admires his strength at one point, however the latter doesn't return said feeling as Floyd slightly dislikes Nero.