Early career Lapilus followed the path of his brother Damien, who is also a professional mixed martial artist, and began training in mixed martial arts in 2010. He made his debut as a professional in 2012, competing as a featherweight for primarily for various regional promotions across France. He was able to compile a record along the way of 8–1. On the heels of his finish of Cyril Ericher in May 2014, Lapilus signed with the UFC in the fall of 2014.
Ultimate Fighting Championship Lapilus was expected to make his promotional debut on 4 October, 2014, as a short notice replacement against
Dennis Siver at
UFC Fight Night 53, filling in for an injured
Robert Whiteford. However, the Swedish Mixed Martial Arts Federation subsequently deemed Lapilus an unsuitable opponent, and in turn,
Charles Rosa was tabbed as the last-minute replacement. Lapilus eventually made his debut against Rocky Lee on 11 April, 2015, at
UFC Fight Night 64. Lapilus won the fight via unanimous decision. Lapilus faced
Yuta Sasaki on 20 June, 2015, at
UFC Fight Night 69. Lapilus won the fight via TKO in the second round. Lapilus faced
Erik Pérez on 21 November, 2015, at
The Ultimate Fighter Latin America 2 Finale. He lost the fight by unanimous decision. Lapilus next faced
Leandro Issa on September 3, 2016, at
UFC Fight Night 93. He won the fight by unanimous decision.
Post-UFC career After the sole boxing bout in 2017, Lapilus racked Bantamweight Championships in both
TKO Major League MMA and German MMA Championships. In November 2019, it was revealed that Lapilus has signed with a new, Afro-European MMA promotion ARES Fighting Championship. Lapilus was expected to make his promotional debut in the promotion's inaugural event on December 14, 2019 against
Bryan Caraway. However, Caraway withdrew from the bout due to an injury and was replaced by Marcos Breno. He won the fight via unanimous decision. Lapilus faced
Wilson Reis at Ares FC 2 on December 12, 2021. He won the bout via unanimous decision. Lapilus faced Demarte Pena for the vacant AFC Bantamweight Championship on April 16, 2022 at Ares FC 5. He won the bout and title via TKO stoppage in the first round.
Return to UFC Lapilus was scheduled to face
Khalid Taha on September 3, 2022, at
UFC Fight Night 209. However, Lapilus withdrew a week before the event due to a broken hand and was later replaced by Cristian Quiñónez. Lapilus was scheduled to face Muin Gafurov on September 2, 2023, at
UFC Fight Night 226. However, Lapilus was instead matched up with Caolán Loughrán after Gafurov withdrew due to visa issues. He won the fight by unanimous decision. Lapilus faced
Farid Basharat on January 13, 2024, at
UFC Fight Night 234. He lost the bout by unanimous decision. Lapilus faced
Cody Stamann on June 8, 2024, at
UFC on ESPN 57. He won the fight by unanimous decision. Lapilus was scheduled to face
Felipe Lima on September 28, 2024, at
UFC Fight Night 243. However, Lima withdrew from the fight for unknown reasons and was replaced by
Vince Morales on short notice. Lapilus won the fight by unanimous decision. Despite being 3–1 again in his second stint, on February 27, 2025, it was reported that Lapilus was once again removed from the UFC roster.
Professional Fighters League On March 25, 2025, it was announced that Lapilus signed with
Professional Fighters League. Lapilus faced Kasum Kasumov on February 7, 2026, at
PFL Dubai: Nurmagomedov vs. Davis, and won the bout via TKO in the third round. ==Mixed martial arts style==