Neron is the Devil. Neron generally offers deals to villains and heroes for services usually for there souls. Neron has no limits in the power and apparently cannot be defeated.

Underworld the first appearance of Neron he recruits villains and heroes to join him and do what he says. For following him some of them don't have to lose there souls to gain there power. Neron however is defeated when Trickster comes out and helps the heroes know that he cannot take a pure soul who sacrifices himself which is what Captain Marvel does. In the series, Many Villains sold their soul. One of which was Joker who sold his soul for a box of Cigars.

Another character who "sold" their soul to Neron was Lobo, during the time of [i]Underworld Unleashed[/i]. After taking the soul Doc Bugg (aka "The Bugmeister") and granting him insect powers in return, he propositioned Lobo, who agreed to sell his soul. After Neron took his soul and agreed to grant Lobo with anything he desired, Lobo demanded Neron's soul as payment. Not having a soul of his own, Neron offered Lobo his soul back and asked if there was anything else he could offer as compensation for their misunderstanding. Earlier that day, Lobo's neuro-transmitter, which was tuned into Cosmic Rock Zombie Radio 24/7, had changed DJ's and was playing nothing by soul music, and Lobo made the request that the neuro-transmitter be placed in Neron's brain instead, and he also said that Neron could even keep his soul. As Neron walks away, we see the soul music playing from his forehead, leaving Neron apparently discontent. Whether or not he still has the transmitter in his brain has not been addressed since.

He also killed Wonder Woman for a time, but thankfully she was restored by her gods.

Neron appears in Teen Titans 42 and is the reason for kid Devil new look. Neron well come back for his soul in two years after he loses faith in blue devil. When Eddie realizes Blue Devil Accidentally caused the death of his aunt he loses faith.

Neron last appearance is when Ralph Dibny summons him to the Tower of Fate demanding that he do as he demands for bringing Felix Faust. He denies and then goes on to kill Ralph only to find out they are trapped until Ralph is awoken and speaks to them.

In Birds of Prey, Black Alice copied his powers and brought back her mother.