North American independent circuit (2004–present) Romero worked in the
American independent sscene since 2004. At
a house show promoted by
The Crash Lucha Libre on February 16, 2018, he teamed up with Aeroboy in a losing effort against
Daga and
Masada. At
IWA Mid-South Hardcore Heartbreak, an event produced
IWA Mid-South on February 17, 2018, Romero defeated
Dale Patricks in singles action.
Game Changer Wrestling (2017–present) Romero made his debut in
Game Changer Wrestling at
GCW Road To Survival on April 23, 2017, where he defeated
Danny Havoc in an
ultraviolent match. at ''GCW Hit 'Em Up
on January 20, 2018, he unsuccessfully challenged Nick Gage for the GCW World Championship. At GCW Worst Behavior 2019
on August 22, he teamed up with Los Mazisos (Ciclope and Miedo Extremo) in a losing effort against Drew Parker, G-Raver and Jimmy Lloyd. One day later at GCW The New Face Of War 2019
he teamed up with Isami Kodaka and Takashi Sasaki to defeat Alex Colon, Eric Ryan and Masashi Takeda. At GCW Dead On Arrival'' on September 27, 2022, he teamed up with his "ERE" stablemates Drew Parker and
Toshiyuki Sakuda in a losing effort against Mega Bastards (Alex Colon and
John Wayne Murdoch) and
Rina Yamashita.
Japanese independent circuit (2014-present) Romero is known for competing in various promotions from the
Japanese independent scene. At
DDT Beer Garden Fight 2018, an event promoted by
DDT Pro-Wrestling on August 3, 2018, he defeated
Shunma Katsumata. At
Sakaide Ribbon 2022, an event promoted by
Ice Ribbon on May 14, 2022, he defeated Takashi Sasaki in singles competition. At
Ice Ribbon BIG DEKAI Produce from October 10, he teamed up with
Satsuki Totoro in a losing effort against
Hartley Jackson and
Yuna Manase in a
mixed tag team match. He took part in the 2021 edition of
Big Japan Pro Wrestling's
Ikkitousen Strong Climb, where he competed in the Block A which he won with a total of six points after going against
Masaya Takahashi,
Abdullah Kobayashi and
Jaki Numazawa, but fell short to Drew Parker in the semifinals. At
Risa Sera Debut 10th Anniversary, an independent event produced by the
Prominence stable on November 14, 2022, Romero competed in a
60-minute ironwoman match which concluded in a draw and also involved
Akane Fujita,
Miyako Matsumoto,
Mochi Natsumi, Orca Uto,
Takayuki Ueki and
Risa Sera.
Pro Wrestling Freedoms (2016–present) Romero is probably best known for his tenure with
Pro Wrestling Freedoms. He made his first appearance in the promotion at
FREEDOMS Crazy Monkey Presents Tokyo Death Match Carnival 2016 on July 13, where he defeated
Jun Kasai to win the
King of Freedom World Championship on his very debut. He has held the title on four different occasions during the time. Romero has competed in cross-over events between Freedoms and
Active Advance Pro Wrestling due to the partnership between them. At
FREEDOMS/2AW Versus on October 25, 2020, he teamed up with Mammoth Sasaki to defeat
Ricky Fuji and
Tank Nagai. ==Championships and accomplishments==