"Cleber is often referenced as "Cleber Clandestino" or simply "Clã". The Portuguese word Clandestino translates to Clandestine in English, and it started being used during Sousa's first few weeks at Almeida Jiu Jitsu's academy. This was thanks to coach Gustavo Almeida who questioned Sousa regarding his origins by asking if he was of Bolivian or Manaus (indigenous) descent. Cleber mentioned that he wasn't either, which earned him the nickname of clandestine (as in 'undercover native Brazilian')."