Chagas moniker "Tarzan" was coined after where he was from, Navirai, Mato Grosso do Sul in Brazil where 65% of the Brazilian Pantanal, a natural region encompassing largest tropical wetland area in the world.
With his Karate and Muay Thai background, Tarzan use kicking for his fighting strategy. He throws sharp chopping low kicks and also utilizes wheel and head kicks to try to score a knockdown. He is a competent wrestler and enjoy throwing flurry lunging strikes on the early round.
Tarzan he attended Karate classes at the early age and was the children's champion in the sport in Brazil. He started training Brazilian Jiu-Jitsu at Gile Ribeiro gym after he moved to Curitiba where he received his black belt in 2015. He transitioned to MMA later and started competing in MMA and won the welterweight championship for Curitiba Fight Pro. Tarzan stated his professional MMA career on July 28, 2012 and he fought all his fights in Brazil. He was the Curitiba Fight Pro middleweight champion and amassed a record of 14-1 prior signed by UFC.
In his UFC debut, Tarzan faced Serginho Moraes as a late replacement, on May 14, 2016 at UFC 198 in Curitiba, Brazil. Tarzan started the fight with a barrage of punches on round one and dropped Serginho on round two with a leg kick. Moraes took down Tarzan but was not able to score a submission. After three rounds, the fight was declared a draw.
His next UFC fight was on September 2016 against Erick Silva at UFC Fight Night: Cyborg Vs. Lansberg. He lost the fight via submission on round three. The fight earned him the Fight of the Night award.
On June 3, 2017, he faced JIm Wallhead at UFC 212. He submitted Wallhead via a rear naked choke on round two and won the fight.
Tarzan was scheduled to face Niko Price on October 28, 2017 UFC Fight Night: Brunson Vs. Machida on October 6, 2017, it was announced that Tarzan has fractured his foot and was pulled out from the bout.
Tarzan faced Siyar Bahadurzada on April 21, 2018 at UFC Fight Night 128. He lost the fight via knockout in round two.