The players in the first line up were drummer Béla Gábor, guitarists Zsolt Szentpéteri and Lajos Szöllősi (later replaced by Szabolcs Szűcs) and bassist Salim Mahboubi.

In 2003 the band recorded their second studio album The Unbeatable Eleven, with songs, such as Pioneer, Fishmachine, Joe De Miro's Concrete Shoes or Eat My Brains, that later became trademarks of Superbutt.

The album stayed in the top 20 of DAT20 German Alternative Charts for 8 weeks, and the music video of the song Better Machine (a paraphrase of the very popular TV series 24), became Superbutt's second most successful hit after Pioneer.

As one of the highlights of their career, Superbutt headlined their self-organized mini festival at Petőfi Csarnok in Budapest at the end of the year, selling almost 1000 tickets (972 to be precise) to the show.

Salim Mahboubi and Zsolt Szentpéteri quit due to family reasons, while Szabolcs Szűcs had to give up touring actively because of his civil job as a sound engineer and producer.

After three chaotic months while Superbutt did a Hungarian headliner tour and a few support gigs with In Flames in Eastern Europe with some of the old members and ever changing substitute players, the new line-up shaped up by the summer of 2009, with Attila Kovács (former member of Watch My Dying and Sear Bliss) and Tamás Práznek (former technician of Superbutt) on guitars, Zoltán Prepelicza (Remembering The Steel – Pantera Tribute; Apey & the Pea) on bass and initially Péter Szűcs, then László Makai (Zoltán Prepelicza's bandmate in Remembering The Steel – Pantera Tribute and Apey & The Pea) on drums.

The most important events of this era were the Red Bull Music Clash contest at the EFOTT festival (Baja, Hungary) in July 2009 where Superbutt had to play a very special set collaborating with the indie-alternative act The Moog with cover versions and playing each other's songs as well (out of which some were later recorded and released on the bonus disc of Music For Animals album); and the Red Bull Mixtour (6 shows in Hungary) with a set created especially for the tour collaborating with the Hungarian hip hop group Hősök, the ska band PASO and the folk-electro act Folkfree.

The main songwriter was Attila Kovács in cooperation with Ádám Fellegi, the ex-drummer of Newborn and ex-guitar player of Bridge To Solace, Hungary's two top hardcore acts of the first decade of the 2000s.