Albert debuted on WWF television on the April 11, 1999 episode of Sunday Night Heat, saving Droz from a beating at the hands of Big Boss Man. He was dubbed Prince Albert, the personal tattooist of Droz, and together they formed a short-lived trio with Key. Droz and Albert continued to team together until Droz was paralyzed in October 1999, at which point Albert became the protege of the Big Boss Man. The duo separated following the debut of Bull Buchanan, who formed a tag team with the Big Boss Man.
In March 2000, Prince Albert, now known simply as Albert, was recruited by Trish Stratus to form a tag team with Test. The tag team, known as T&A, competed in the tag team division throughout 2000, feuding with rival tag teams such as the Dudley Boyz and the Acolytes. In December 2000, the team separated after Albert attacked Test under the orders of Stephanie McMahon-Helmsley.
In April 2001, Albert formed a stable called X-Factor with Justin Credible and X-Pac. On June 28, he defeated Kane with help from Diamond Dallas Page to win the Intercontinental Championship, his first and only title in the WWF. Albert later lost it to Alliance member Lance Storm on July 23, after several wrestlers interfered. In July, Credible left X-Factor and joined The Alliance. Albert and X-Pac continued X-Factor as a tag team until November, when X-Pac was sidelined with an injury.
In late 2001, Albert was nicknamed "The Hip Hop Hippo" as he began teaming with Scotty 2 Hotty. Upon the introduction of the Brand Extension, both Albert and Hotty were assigned to the SmackDown! brand. They disbanded on April 4, 2002 when Albert attacked Scotty after the duo failed to defeat Billy and Chuck for the WWF Tag Team Championship.
Subsequently, he spent much of his time on Velocity until December 2002, when he joined forces with Paul Heyman and Big Show, which saw Heyman persuade him to rename himself to A-Train and debut new attire, the latter of which saw fans often chant "Shave Your Back!" at him during his matches due to his hairy torso. A-Train and Big Show lost to The Undertaker at WrestleMania XIX, after which A-Train continued the feud, culminating in a match at SummerSlam. A-Train then lost to Chris Benoit at No Mercy and, at Survivor Series, was on Brock Lesnar's team in a ten-man Survivor Series match in a losing effort, in which he was pinned by Bradshaw. He competed in the 2004 Royal Rumble match, and was eliminated by the eventual winner, Benoit. After Benoit decided to wrestle Triple H for the World Heavyweight Championship on the Raw brand, General Manager Paul Heyman held a SmackDown! brand-exclusive Royal Rumble, to determine who would meet Lesnar for the WWE Championship at No Way Out. A-Train was eliminated by Eddie Guerrero, who went on to win the match. A-Train was traded to the Raw brand on March 22, 2004 before making his official Raw debut on June 7. His last match was a loss to Val Venis on WWE Heat. Two weeks later, he was sidelined with a torn rotator cuff and was released from his WWE contract on November 1, 2004 before he could return.
On March 17, 2012, it was reported that A-Train had re-signed with WWE. On the March 19 episode of Raw, he appeared in a vignette under the new ring name Lord Tensai. On the April 2 episode of Raw, he made his WWE re-debut as Lord Tensai, where he was accompanied by his follower Sakamoto before defeating Alex Riley. In the following weeks, Tensai went on a winning streak, scoring pinfall victories over lower card wrestlers and even main stars including John Cena and WWE Champion CM Punk.
On the May 21 episode of Raw, Tensai dropped the "Lord" portion of his ring name and his Japanese outfit worn during his entrance. Following this, Tensai began losing much more frequently throughout the rest of 2012, beginning with John Cena ending his winning streak before he also suffered a loss to World Heavyweight Champion Sheamus. His losing streak caused Tensai to often vent his frustrations by abusing and attacking Sakamoto, who eventually ceased appearing with Tensai. On the June 29 episode of SmackDown, Tensai defeated Justin Gabriel to break his losing streak and also qualify for a spot in the World Heavyweight Championship Money in the Bank ladder match at Money in the Bank, though the match was ultimately won by Dolph Ziggler. Over the next three months, Tensai's losing streak resumed, as he lost to the likes of Tyson Kidd, Sin Cara, Randy Orton, and Ryback. Tensai finally ended his losing on the October 5 episode of SmackDown, defeating Big Show by disqualification after Sheamus interfered. However, he would be back on losing end the following week, after being defeated by Sheamus. On November 18 at the Survivor Series pay-per-view, Tensai took part in a traditional five-on-five elimination tag team match, but he was the second man eliminated from his team, but not before eliminating Brodus Clay. In December, Tensai was reduced to a comedy act, with Santino Marella calling him "Fat Albert" before proceeding to defeat Tensai.
On the January 28, 2013 episode of Raw, Tensai was tricked into wearing lingerie while participating in a dance-off with Brodus Clay. Two days later on Main Event, after being mocked for his lingerie dance, Tensai defeated Titus O'Neil in a singles match. Clay came out to support Tensai during the match and Tensai danced with Clay after the match, signalling a face turn. Following this, Clay and Tensai formed a tag team and they went on to defeat established teams such as Primo and Epico, Heath Slater and Jinder Mahal of 3MB, and Team Rhodes Scholars (Cody Rhodes and Damien Sandow), with the latter match taking place during the pre-show of Elimination Chamber on February 17. On the March 22 episode of SmackDown, Tensai and Clay were defeated by Team Rhodes Scholars in a tag team match after an interference from their associates The Bella Twins. Tensai (also now referred to by the name Sweet T) and Clay announced their official tag-team name "Tons of Funk" on the March 27 episode of Main Event, where they accompanied The Funkadactyls (Cameron and Naomi) to ring in a losing effort to The Bella Twins with Team Rhodes Scholars in their corner when Nikki pinned Naomi after an interference by Cody Rhodes.
The two teams were originally booked to face each other in an eight-person mixed tag team match on April 7 at WrestleMania 29, but their match was cut due to time constraints. The match instead took place the following night on Raw, where Tons of Funk and The Funkadactyls emerged victorious. After nearly a month of in-ring absence, Tons of Funk returned on June 6 episode of Superstars, defeating Primo and Epico. On June 24, Tensai and Clay competed in a triple threat tag team match to determine the number one contenders for the WWE Tag Team Championship against The Usos and 3MB (represented by Drew McIntyre and Jinder Mahal), although The Usos would ultimately win the match. In November 2013, Tons of Funk began to show signs of instability once Clay started a storyline where he became angry and jealous of the debuting Xavier Woods. As Clay began to exhibit more heel-oriented tendencies, such as repeatedly attacking Woods after he had defeated Woods in a match, Tensai and the Funkadactyls slowly became alienated from him. At TLC: Tables, Ladders & Chairs, Clay faced Woods' partner, R-Truth, and continually assaulted Truth instead of going for a win, resulting in Tensai and the Funkadactyls leaving in protest and Clay subsequently losing the match. On the December 20 episode of SmackDown, Tensai defeated Clay in a singles match after a distraction from Woods and the Funkadactyls.
After Tons of Funk disbanded, Tensai was taken off television and, in January 2014, began working in WWE's developmental territory NXT as a commentator under the new ring name Jason Albert. On March 6, 2015, Albert was reportedly promoted to interim NXT head trainer. On May 19, he was promoted to NXT head coach from his previous interim role.