Sons of Outlaws Series by James Cox

Twenty years after the Outlaw MC series, their children may not know the cost of war but they will know terror when Mars starts to reject humanity. Roark is Mayhem’s son, and he's earned his place in the club. He’s a Dominant that has a constant eye on the new prospect, Henry. Roark is horny, so he's looking forward to dominating the prospect. It all goes to hell when the quake rocks Mars and they’re trapped underground—and overhear a plot to kill an MC member... moreTwenty years after the Outlaw MC series, their children may not know the cost of war but they will know terror when Mars starts to reject humanity. Roark is Mayhem’s son, and he's earned his place in the club. He’s a Dominant that has a constant eye on the new prospect, Henry. Roark is horny, so he's looking forward to dominating the prospect. It all goes to hell when the quake rocks Mars and they’re trapped underground—and overhear a plot to kill an MC member. Get the lube, bring the blindfold, and don’t forget the restraints. Roark doesn’t play, he takes control. And when Roark finally gets Henry under him, not even a dying planet will stop him from finding his sticky, happy ending. less

Earth beasts are sexier than he expected… Welliver is a scientist first and an Outlaw MC member second. He’s the smartest man on the crew that’s exploring Earth to create a new home. But when a monster attacks them and he’s separated from the crew, he is saved by a savage and sexy beast. The beast doesn’t remember his name. He was sent to the Earth prison when he was a boy and left behind when the prison was evacuated... moreEarth beasts are sexier than he expected… Welliver is a scientist first and an Outlaw MC member second. He’s the smartest man on the crew that’s exploring Earth to create a new home. But when a monster attacks them and he’s separated from the crew, he is saved by a savage and sexy beast. The beast doesn’t remember his name. He was sent to the Earth prison when he was a boy and left behind when the prison was evacuated. Beast has spent nearly twenty years alone on Earth, trying to survive this dangerous world. He’s the best hope humans have for staying alive with these new threats. Beast doesn’t understand it’s not okay to lick strangers, or the whole wearing clothes thing, but neither man is prepared for the attraction between them. Welliver will have to pull on his Outlaw MC heritage to endure the wilds of Earth but how will survive the savage beast? less