Batman 103 Batman of Zur-En-Arrh

First appearance: Batman #113

Zur-En-Arrh was the name of a distant planet. Here, a scientist called Tlano became the Batman from Zur-En-Arrh inspired by the Batman of Earth. When Zur-En-Arrh is attacked by robot invaders, Tlanos teleports Batman to his planet to help him.

DC Wiki - Batman of Zur-En-Arrh

wkDP16-003 Ace the Bathound
Convention Exclusive

First Appearance: Batman #92 (1955)

This German Shepherd dog was taken in by Batman & Robin, helping the caped crusaders in their investigations.  There have been various incarnations of Ace throughout Batman's history as well as several references.

Ace the Bathound also made an appearance in the animated series of Krypto the Superdog.

DC Wiki - Ace the Bathound

War of Light #038 Dex-Starr

First Appearance: Final Crisis: Rage of the Red Lanterns #1 (December, 2008)

Not one of the Super Pets, more of a villain, Dex-Starr is a house cat from the planet Earth who is among the deadliest of the Red Lantern Corps. He was given his ring after a series of events that resulted in seeing his owner killed and being found in an alley and put in a bag to be thrown off a bridge. His mission is to find his owner's killer.

DC Wiki - Dex-Starr
 

tt037a Deathstroke
First appearance: The New Teen Titans #2

Deathstroke, Slade Wilson, an assassin for hire and enemy of the Teen Titans.  An elite trained soldier, an experimental serum gives him advanced strength and reflexes. 

He has recently appeared in the Arrow TV series and a cameo in The Justice League movie.



Wiki - Deathstroke

Deathstroke was also the original
inspiration for Marvel's Deadpool

A constant villain to Wonder Woman, there have been several versions of Cheetah, the first being Priscilla Rich.  Unlike the Post-Crisis versions, the two early Cheetahs did not have any super powers.

Wiki - Cheetah

Orion is the second son of Darkseid; dictator of Hellish Apokolips. He is the half-brother of Kalibak and Grayven.  Orion belongs to an extraterrestrial race of supernatural immortals known as the New Gods.

Wiki - Orion

Kathy Kane was introduced to Detective Comics as Batwoman, a masked crime fighter and part of the Batman Family, as a love interest for Bruce Wayne to dissuade rumours that he was gay.

The modern Batwoman is Kate Kane, and far from dissuading gay rumours the character is gay herself. It has been recently announce that Batwoman will be portrayed on Tv by the actress Ruby Rose.

Wiki - Batwoman

A member of the Injustice League and Nemesis to Aquaman.  He wears a black wetsuit with a bug-eyed helmet that is capable of shooting rays from its eyes.



Wiki - Black_Manta

During the Blackest Night story Nekron reanimates the corpse of Batman turning him into a Black Lantern. Oh, Batman died... sort of. You'll have to read it.

Wiki - Blackest Night

The original Trickster, James Jesse, is the practical joker and con man whose favourite occupation is damaging enemies like the Flash with items such as explosive teddy bears.

While the first Trickster was working for the FBI, teenager Axel Walker stole all of Jesse's gadgets and shoes and became the new Trickster.

Wiki - Trickster

The Rogues represent a group of enemies of the comic book superhero the Flash, currently led by Captain Cold including the Mirror Master, Heat Wave, the Weather Wizard, the Trickster, the Pied Piper, the Top, and Captain Boomerang.

Wiki - Rogues
 

In the distant past, a dying alien race creates a number of containment devices in which to preserve their culture. They send them into space with contact teams, intent on meeting other civilizations. When a small group of these aliens arrives on the planet Krypton, they are met by the militant Kem-L, who kills them and corrupts one of the devices. Its new mission is to preserve his ideal of Kryptonian culture by eradicating all others — and thus the device becomes known as the "Eradicator."

After Superman was killed by Doomsday, the Fortress robots reactivated the Eradicator. This humanoid version of Eradicator was a major part of the Reign of the Supermen storyline.

https://en.wikipedia.org/wiki/Eradicator_(comics)