After FCW folded in 2012, Leppan continued to wrestle in its successor NXT as Leo Kruger, before moving to WWE's main roster, as Adam Rose in early 2014.

[12] Leppan debuted at a Florida Championship Wrestling (FCW) house show under his real name on 12 February 2010, in a losing effort against David Otunga.

[15] At the television tapings on 20 May, Kruger challenged the former Paul Lloyd, Jr. and fellow South African wrestler, Justin Gabriel to a match.

The duo challenged Los Aviadores (Hunico and Epico) for the FCW Florida Tag Team Championship on 2 July, but were unsuccessful.

Kruger then went on a winning streak, defeating Big E Langston, Bateman, Austin Watson, Husky Harris, and Wes Brisco, before finally losing in a mixed tag team match, when he and Kaitlyn lost to Brad Maddox and Jamie Keyes on 9 September.

[17] After Bo Rotundo was injured in September 2011, his FCW Florida Heavyweight Championship was vacated and a tournament set up to determine the new champion.

[18] Kruger defeated Percy Watson to make it to the final, a fatal four-way match against Husky Harris, Damien Sandow, and Dean Ambrose.

[20] Kruger then appeared in dark matches prior to the SmackDown television tapings on 20 and 27 September, losing to Trent Barreta and defeating Johnny Curtis respectively.

[23][24] On 18 December episode of FCW television, Kruger successfully defended the championship against Seth Rollins, after interference from Antonio Cesaro.

[43] On 18 July NXT, Kruger won a triple threat match against Sami Zayn and Antonio Cesaro to become number one contender.

[47] As Rose, he returned to television on 6 March 2014 episode of NXT, with his new character being an organiser of parties with various colourful costumed party-goers, who accompany him during his ring entrance.

[51] In August 2014, within NXT, Rose and Sami Zayn participated in a tournament for an opportunity at the NXT Tag Team Championship, defeating Justin Gabriel and Tyson Kidd in the first round,[52] but they lost in the second round to Lucha Dragons (Kalisto and Sin Cara), with the Adam Rose character being pinned for the first time.

On 22 September episode of Raw, Rose teamed with his popular Rosebud, The Bunny (a 'highly athletic individual' in a rabbit suit) for the first time, as they defeated Heath Slater and Titus O'Neil.

He next feuded with the returning Zack Ryder, with the pair exchanging victories and using Twitter to insult one another, with even William Shatner (whom Rose called "Dad") joining in.

On 22 June episode of Raw, Rose's gimmick was slightly altered to a pompous artiste, exclaiming that the WWE Universe had no idea of true art or passion, hyping up the reveal of his "masterpiece" in the process.

Rose re-emerged on 29 August episode of Main Event, sporting generic black boots and tights, a plain grey shirt, glasses, and an altered gimmick again.

[69] On 3 November edition of Main Event, during and after defeating Fandango, this mystery bunny person was seen at ringside leaving Rose surprised.

[74] On 11 January episode of Raw, now billed as The Social Outcasts, the group would face The Wyatt Family to a no contest when Ryback interfered.

[75] On 24 January 2016 SmackDown, the four defeated the team of Goldust, Damien Sandow, Jack Swagger and Zack Ryder in an eight-man tag match.

At WrestleMania 32, Rose competed in the Andre the Giant Memorial Battle Royal, but was eliminated by the eventual winner Baron Corbin.

[1] Four days later on 20 April, Leppan publicly addressed his suspension as "not right", saying "I did not do anything knowingly wrong and was taking prescribed medication that my [doctor] and I followed all the correct protocol on".

After his release, Leppan announced his new ring name as Aldo Rose, maintaining the party host gimmick, but as an edgier character.

In addition, he announced that he had "killed off" the Adam Rose character and returned to his Leo Kruger persona, now renamed Krugar.

On 18 March 2019, Leppan announced his retirement from pro wrestling, saying that he would be fulfilling the rest of his current bookings, not taking anymore after that.

[87] In May 2015, a documentary by E:60 titled "Behind the Curtain", aired on ESPN, focusing on Leppan, Austin Watson (Xavier Woods), Matthew Polinsky (Corey Graves), and their time in WWE's developmental system, NXT.

[90] WWE officials suspended Leppan indefinitely, citing their "Zero Tolerance" policy for domestic abuse, and would later grant him his request for a release.

On 17 June 2016, Leppan garnered controversy after releasing a T-shirt via the Pro Wrestling Tees website that featured the mugshot from his domestic violence arrest.