On December 6, 2003 at the K-1 World Grand Prix 2003 quarter-finals in Tokyo, Japan, Bonjasky was matched up against Australian fighter Peter "The Chief" Graham.

In 2004 he accumulated wins over Tsuyoshi Nakasako, Francois Botha, Aziz Khattou and ex-sumo champion Chad "Akebono" Rowan.

If it hadn't been for his one loss in 2004 against Francisco Filho he would have beaten Semmy Schilt's record of the longest winning streak in K-1 history.

On December 4, 2004 at the K-1 World Grand Prix 2004, with three decision wins over Ernesto Hoost, Francois Botha and Musashi, Bonjasky successfully defended his K-1 WGP title.

He presented himself on November 19, 2005 for the K-1 World Grand Prix 2005 finals in Tokyo, to keep his title for a third consecutive year, but was stopped by Semmy Schilt's knee strikes in the tournament's semi-finals.

Prior to his rematch with Remy, he pledged that the 2006 Grand Prix would be his year to finally become the undisputed champion, at the expense of Bonjasky whom he'd beaten before.

On September 29, 2007 Bonjasky was booked in a rubber match with Stefan Leko at the K-1 World GP 2007 in Seoul Final 16 event.

He further lit the fuse by claiming Leko was a limited fighter, who 'only had a couple of punches and a spinning back kick, nothing else'.

Bonjasky won the grudge fight by TKO when the ref stopped it in the first round after landing his trademark flying knee strike.

have criticised the stoppage as K-1 protecting the by-then bigger name superstar, as Remy had been their World Grand Prix champion, and that K-1 wanted him through to the later stages.

Regardless, the fight marked the end (as of 2011) of the feud between the two, and the win qualified Bonjasky for the K-1 World Grand Prix 2007 Finals which were held on December 8, 2007 at the Yokohama Arena in Japan.

[10] At the K-1 World Grand Prix 2007 Finals, Remy Bonjasky faced fellow Dutch fighter Badr Hari.

Bonjasky started off 2008 by knocking out Melvin Manhoef in Amsterdam, Bazigit Atajev in Tapei and majority decision over Paul Slowinski in the K-1 16 to qualify for his 6th Grand Prix appearance.

In the quarter-finals he defeated Jerome Lebanner by TKO, Gokhan Saki by KO in the semi-finals, sending him to the K-1 World Grand Prix Finals for the third time against Badr Hari.

In the 3rd round Remy knocked Alistair down with a flying knee and right punch combo to secure a unanimous decision win.

At the K-1 World Grand Prix 2009 Final Remy was won his third consecutive unanimous decision against Errol Zimmerman.

Bonjasky was absent from the K-1 World Grand Prix 2010 in Yokohama tournament,[13] and did not fight at all in 2010, and has pondered retirement after having eye surgery in August of the year.

He was then eliminated in the quarter-finals, however, when he looked lackluster against newcomer Jamal Ben Saddik and, due to the "best of three" format in the tournament, lost on points after two rounds.

Bonjasky was their last victim, and after having been hit by the dart he pursued the van in a cab and proceeded to call the police who managed to arrest the criminals.

[44] The opening ceremony was attended by two TV presenters and four athletes, Quinty Trustfull, Humberto Tan, Kew Jaliens, Peter Aerts, Jerome Le Banner, and Ernesto Hoost.