Harper and Rowan debuted on NXT under the leadership of Bray Wyatt to form a faction known as The Wyatt Family in November 2012, with the duo being referred to as Wyatt's "sons". On the January 23, 2013 episode of NXT, Harper and Rowan entered the NXT Tag Team Championship tournament to crown the inaugural champions, defeating the team of Percy Watson and Yoshi Tatsu in the first round. Following a win over Bo Dallas and Michael McGillicutty in the semi-finals with Wyatt's interference, Harper and Rowan went on to the finals of the tournament, but were defeated by Adrian Neville and Oliver Grey.
The Wyatt Family later assaulted Grey (who had suffered a legitimate injury) while Wyatt prevented Bo Dallas from winning an NXT Championship number one contender match due to Dallas refusal to join The Wyatt Family. On the May 2 episode of NXT, Harper and Rowan won a triple threat elimination tag team match by lastly pinning Neville to earn a shot at the NXT Tag Team Championship. On the May 8 episode of NXT, Harper and Rowan defeated Neville and Dallas, the latter of whom filling in for the injured Grey, to win the NXT Tag Team Championship. After Harper and Rowan won the titles, The Wyatt Family went on to feud with Corey Graves and Kassius Ohno. On the June 19 episode of NXT, The Wyatt Family defeated the team of Graves, Neville and Ohno. On the July 17 episode of NXT, Harper and Rowan lost the NXT Tag Team Championship to Neville and Graves.
Beginning on the May 27, 2013 episode of Raw, WWE aired vignettes promoting the upcoming main roster debut of The Wyatt Family. The vignettes showed the Wyatt Family's backwoods origins and Rowan wearing a sheep mask. On the July 8 episode of Raw, The Wyatt Family made their debut by assaulting Kane. Harper and Rowan made their main roster in-ring debut on the July 26 episode of SmackDown, where they defeated Tons of Funk (Brodus Clay and Tensai) in a tag team match. Over the next few months, Harper and Rowan competed as a tag team and went on a winning streak over many teams, until Cody Rhodes and Goldust handed them their first loss on the October 11 episode of SmackDown. In early 2014, Harper and Rowan feuded with The Shield, while also supporting Bray Wyatt in his feud with John Cena. While Wyatt and Cena's feud continued, Harper and Rowan also started a feud with The Usos, unsuccessfully challenging for the WWE Tag Team Championship at Money in the Bank and Battleground.
On September 29, 2014, vignettes began to air of Bray Wyatt announcing he was setting Luke Harper and Erick Rowan "free". Rowan returned on the October 31 episode of SmackDown, while Harper returned on the November 10 episode of Raw, aligning himself with The Authority. On the November 17 episode of Raw, Rowan joined Team Cena for Survivor Series, opposing Luke Harper and turning into a heroic character. At the event, Rowan's team was victorious. During the match, Harper and Rowan attacked each other, with Rowan ultimately being eliminated from the match by his former partner (with assistance from Seth Rollins).
On the December 8 episode of Raw, Harper and Rowan faced each other in singles competition, with Harper ultimately getting himself disqualified. On the January 5, 2015 episode of Raw, The Authority punished Rowan by putting him in a singles match against Harper, with Harper picking up the win after a discus clothesline and the help of J&J Security (Jamie Noble and Joey Mercury), who were the special guest referees for the match. On the January 22 episode of SmackDown, Harper and Rowan once again competed against each other, this time in a 2015 Royal Rumble qualifying match, with Harper winning and thus not allowing Rowan to participate in the Royal Rumble match. Despite this, Rowan appeared during the Royal Rumble match on January 25, ambushing the number six entrant Curtis Axel, to attack Harper and subsequently sparking a brief Wyatt Family reunion, along with Bray Wyatt, before all three men began to brawl.
On the May 7 episode of SmackDown, Rowan would come out after Harper defeated Fandango, seemingly to confront Harper, but would instead attack Fandango and thus turning into a villain in the process. On the May 11 episode of Raw, Harper and Rowan would officially reunite when Harper accompanied Rowan to his match against Fandango which Rowan won after thirty seconds, and the two proceeded to double team Fandango after the match. On the May 18 episode of Raw, Harper and Rowan teamed up to take on Fandango and Zack Ryder, which Rowan and Harper won after a superkick and full nelson slam combination. On the June 4 episode of SmackDown, Harper and Rowan cut a promo about being ostracized and stated they were a family. On the June 5 episode of Superstars, Harper and Rowan defeated Los Matadores in a tag team match, and once again in a rematch the following week on Raw.
In late June, during a match at a live event, Rowan suffered a torn bicep, with reports saying he would be out of action for 4 to 6 months. On the June 23 episode of Main Event, Harper returned to singles competition when he defeated Cesaro, but not before cutting a promo where he said losing his tag team partner has only made him more dangerous. Harper eventually reunited with Bray Wyatt on July 19 at Battleground by helping him defeat Roman Reigns. After four months of inactivity, Rowan returned from injury on the October 19 episode of Raw, when he filled in for Harper (who was unable to show for personal reasons) to team with Wyatt and Wyatt Family newcomer Braun Strowman, against Roman Reigns, Dean Ambrose and Seth Rollins, which his team won by disqualification after Ambrose attacked Strowman with a kendo stick. During this time, The Wyatt Family feuded with several teams including The Brothers of Destruction (The Undertaker and Kane) and Team ECW (The Dudley Boyz, Tommy Dreamer and Rhyno).
In March 2016, Harper suffered a knee injury during a Raw dark match and it was reported that the injury would sideline him for five to six months. On July 19, at the 2016 WWE draft, Wyatt and Rowan were drafted to SmackDown while Strowman was drafted to Raw, separating him from the group. After the draft, Wyatt and Rowan continued their alliance, and Harper returned at the close of the SmackDown brand's No Mercy event on October 9 in a match between Wyatt and Randy Orton, whom Harper distracted to help Wyatt win the match, thus realigning himself with the group. Prior to Harper's return, Rowan underwent surgery to repair a torn rotator cuff.
During Rowan's absence, Harper betrayed the group, attacking Wyatt and his new ally Randy Orton during the 2017 Royal Rumble. On the April 4 episode of SmackDown, Rowan returned from injury after nearly eight months of inactivity, sporting a new steampunk-style sheep mask, assisting Wyatt in attacking Orton (who had also betrayed Wyatt); Wyatt and Rowan later that went on to lose a tag team match against Orton and Harper. The Wyatt Family seemingly disbanded again when Wyatt was moved to the Raw brand during the 2017 Superstar Shake-up, but despite this, Wyatt and Rowan continued their alliance, with Wyatt distracting Orton during his match with Rowan on the April 11 episode of SmackDown. Harper and Rowan continued to rival each other until the feud seemingly ended at Backlash on May 21, where Harper defeated Rowan.
After months without appearing on WWE programming, on the October 10 episode of SmackDown, Harper and Rowan returned in a repackage vignette, with the duo wielding mallets and calling themselves "bludgeon brothers". During this time, both Luke Harper and Erick Rowan shortened their ring names, officially being billed as "Harper" and "Rowan". After a month of promotion, Harper and Rowan wrestled their return match as The Bludgeon Brothers on the November 21 episode of SmackDown, defeating The Hype Bros.
After multiple weeks of defeating enhancement talent in squash matches, the Bludgeon Brothers made an appearance at Fastlane on March 11, 2018, interfering during the SmackDown Tag Team Championship bout between defending champions The Usos and The New Day. This would lead to a triple threat tag team match between the three teams for the titles at WrestleMania 34, where the Bludgeon Brothers won, earning their first title as a team on the main roster; this was also Rowan's first title on the main roster, and the first win at WrestleMania for both. They would go on to successfully defend the titles against The Usos at the Greatest Royal Rumble, against Luke Gallows and Karl Anderson at Money in the Bank, and against Team Hell No at Extreme Rules.
At SummerSlam, Harper and Rowan defended their titles against The New Day; they lost by disqualification after Rowan attacked Xavier Woods with a mallet, marking their first loss as The Bludgeon Brothers. Two days later on SmackDown, Rowan and Harper lost the titles to The New Day in a no disqualification match, ending their reign at 135 days. The following day, it was announced that Rowan had suffered a torn right bicep, sidelining him indefinitely. During this time, Harper also underwent surgery due to a wrist injury.
Rowan returned alone on January 29, 2019 at the Royal Rumble pay-per-view, where he aided WWE Champion Daniel Bryan in retaining his title against AJ Styles. On March 9, 2019, Harper returned to in-ring action, defeating Mojo Rawley at a live event. Harper then wrestled at WrestleMania 35 and Worlds Collide before taking an extended hiatus from weekly television, and on April 16, requesting his release from WWE. However, at Clash of Champions on September 15, Harper returned, helping Rowan defeat Roman Reigns and reforming their alliance. The two were then defeated by Roman Reigns and Daniel Bryan at Hell in a Cell in a tag team match. However, in the 2019 WWE draft, Rowan was drafted to Raw and Harper remained on SmackDown, again splitting the team. On December 8, 2019, Luke Harper was released from his WWE contract, thus ending any possibility of Harper and Rowan teaming up in WWE again. On April 15, 2020, Erick Rowan would also be released from his WWE contract.