His mother has Greek ancestry, and his father is the son of Filipino immigrants. He has called himself "the proud son of a lesbian". Bautista has said that he lived in poverty,  and that he had a hard life—before he reached the age of nine, three murders had occurred on his front lawn. They are good, honest, hard-working folks. They taught me the values of working hard". He made his OVW debut in under the ring name Leviathan, where he immediately joined forces with Synn.
Over several weeks, Orton tried to beat D'Von and Batista with different partners, but ultimately lost each time. He aligned himself with Ric Flair  and feuded with Kane , whom he defeated at Armageddon. While training after the injury, Batista re-tore his triceps, extending his stay on the sidelines. Throughout the next two months, the relationship between Batista and Triple H began to deteriorate. Batista teased leaving Evolution that night, but declared that he was still part of Evolution and that they tricked everyone.
Regardless, he continued to show his loyalty to Triple H and Evolution by running down to the ring and assisting them in matches. Triple H suggested that he not enter the Royal Rumble , claiming that it would be selfish of him to do so, and to simply focus on Triple H retaining the title. Batista entered anyway and went on to win the Rumble earning the right to participate in the main event of WrestleMania 21 against the World Champion of his choice.
Triple H insisted that Evolution stick together and accompanied Dave anyway, saving him from the oncoming vehicle. Batista initially pretended that he would sign with SmackDown!
He emphasized his departure by powerbombing Triple H through the table used for the contract signing. Batista's match with Triple H was described by sports journalist Dave Meltzer as "the peak of one of [WWE's] best storylines in years".
Batista paid homage to Guerrero during the SmackDown! The feud saw Big Show and Kane chokeslamming Batista several more times in the weeks leading up to Survivor Series in an on-camera explanation for Batista's injury. On December 16 episode of SmackDown! In his book, Batista Unleashed, Batista said that he believed that Henry was "careless" during their match as he never gave Batista any warning that the move was coming.
Batista went on to have successful surgery on his arm on January Kennedy into the turnbuckle with his boot, but continued to attack Kennedy resulting in a laceration on his forehead so severe that it exposed his cranium and required more than 20 stitches to close.
Batista won the SummerSlam match, but not the title as the contests ended via disqualification meaning Booker retained the title. Following the latter, Edge took advantage and won the title from The Undertaker by cashing in his Money in the Bank contract. Night of Champions in a Last Chance match. Edge relinquished the title due to an injury the week before the pay-per-view, and Khali became the new World Heavyweight Champion, winning a Battle Royal and eliminating Batista. He won the match by leaping from the inner bamboo structure to the outer one, shortening his escape route and beating Khali to the floor.
Batista pinned The Undertaker after two Batista Bombs. During the match, Edge returned and interfered by giving The Undertaker a con-chair-to. He then pulled an unconscious Batista on top of The Undertaker for the pinfall to retain the World Heavyweight Championship.
After Shawn Michaels defeated Ric Flair at the same event,  Batista began a feud with Michaels, calling him selfish and egotistical. Michaels won after faking a knee injury and performing Sweet Chin Music. Orton's team won with Orton pinning Batista, winning the match for his team.
His feud with Orton continued up to Armageddon where Batista defeated Orton. During the match, Orton struck Batista with a punt to the head. Batista was knocked out and put out of action indefinitely due to a storyline head injury. He was expected to be out of action for six to eight months.
During the match, Batista had brought out a chair, but Triple H tried to stop him, so they would not get disqualified. This distraction however, cost Triple H his championship, after he lost it to Orton.
It was later revealed that Batista had suffered a legitimate torn left biceps similar to what he suffered in Legacy was given on-screen credit for his injury. Randy Orton , assuming Batista was announcing his retirement, then came out and stated that he ended Batista's career.
Batista then went on to remove his arm vice, as it was a fake just to lure out Orton, and proceeded to attack Orton. He then announced that he would not retire, but moving to SmackDown instead.
Later that night, he defeated Orton in a no-holds barred match which was to be his last match on Raw. During the match, Mysterio broke up Batista's pin on Undertaker possibly costing him the match and the title. After the match, Batista and Mysterio appeared to patch things up, but Batista said he was tired of coming so close only to be stabbed in the back and told Mysterio he was going to rip his head off.
Batista proceeded to brutally attack Mysterio, turning heel in the process. Batista initially won the match and the title, but SmackDown General Manager Theodore Long reversed the decision because Batista had hit Undertaker with a low blow behind the referee's back.
The match was restarted with The Undertaker winning and retaining the championship. Cena did so anyway, throwing Batista off of the car and through the stage below. Batista refused and quit the company after Hart named Orton winner by forfeit. His profile was subsequently moved to the alumni page on WWE's website. Later that night, Batista confronted Alberto Del Rio , who had been trash talking him for several weeks, and eventually attacked him with a Batista Bomb.
Despite a positive reaction originally, the crowd began to boo Batista after Reigns was eliminated. Orton, however Bryan was added to the match after defeating Triple H in the opening contest of the show.