Antagonists

Antagonists are any characters or groups that pose a threat to or impede upon the protagonists.

In Ernesto vs Jacob:

 * Ernesto Ibarra faked his own death after a fight with Jacob and disguised himself with a mask and a voice changer to not reveal his identity and later used Jacob to obtain the Elixir of Life and threatened to kill him if he doesn't get it in one week. He ended up dying because he was not worthy enough to drink it.

In Ernesto vs Jacob 2:

 * Kesler sent a agent to work as a undercover butler for Jacob in order to search a Resurrection Stone to revive Ernesto Ibarra, after he did it, he alongside with Ernesto and Jarliev beat up Jacob who ended up losing his arm in a explosion and was sent to jail by them. Later on he freed Jacob while being disguised in a similar way Ernesto did before, because he have plans with Jacob.
 * Jarliev was sent by Kesler to Ernesto's former house to get a job as a butler for Jacob, so he can search for a Resurrection Stone to revive Ernesto. He alongside with Ernesto and Kesler beat up Jacob who ended up losing his arm in a explosion and was sent to jail by them.
 * Ernesto Ibarra was resurrected by Kesler using a Resurrection Stone and immediately attacked Jacob for "attempting to murder him before", he alongside with Kesler and Jarliev beat up Jacob who ended up losing his arm in a explosion and was sent to jail by them.

In Ernesto vs Jacob 3:

 * Kesler managed to trick Ernesto and Jarliev, into making them believe that the masked man with super powers named The Ratman was actually Jacob, who was seeking to kill them in order to get revenge. However it turns out that The Ratman was Kesler, who wanted to cause a confrontation between them, which would end with them killing each other, and all that in order to clear all potential threats for him and his organization. When Jacob teamed up with Ernesto and Jarliev to fight against Kesler, he kidnapped Jacob and demanded Ernesto a $50,000 check for Jacob's freedom, however Kesler set a trap for them and kidnapped them as well. After the trio woke up, Kesler killed Jarliev by choking him and using his lightning powers to electrocute him at the same time. Kesler then gets into a physical confrontation with Ernesto and Jacob simultaneously, a fight he almost won if it wasn't because Jacob pushed Kesler when he was about to kill Ernesto and then stabbed Kesler to death.