Humphry Dumpler's Grandmother - Beware the Batman

The grandmother of Humphry Dumpler lived in Gotham City until her death under mysterious circumstances. 

After escaping police custody and going underground, Dumpler took up residence in her home at 15 Hawthorne Avenue, using the basement to construct lethal mechanised toy soldiers that he would use in his revenge scheme against all those who had hurt and abused him. 

Humphry Dumpler's Mother - Beware the Batman

The mother of Humphry Dumpler, she moved from Gotham to Star City. 

She is registered as missing and presumed dead. 

Durla - Original Timeline - Young Justice: Phantoms

In the 31st century, ten years after General Zod and his Kryptonian army were released from the Phantom Zone, Durla was conquered and enslaved. 

Because of this, a time-displaced Chameleon Boy, a member of the Legion of Superheroes and native of the planet, had reservations about releasing Zod in 2020, fearing they would enact this a century earlier than in the previous, untampered timeline.

Durla - Young Justice: Phantoms

On September 16th 2020, as a reward for loyal service to Apokolips, Grayven—acting with Darkseid’s authority—gifted Durla to Ma'alefa'ak, aka M'comm M'orzz, and the A'ashenn who followed him.

Satisfied with the planet, M'orzz began plans to repopulate and establish it as a new home for his people.