João was once a top-ranked trainer but a new generation of trainers have now surpassed him, putting him lower in the rankings. Despite this, he still remains popular in his country and in places like South America where it's easy to spot the fanclubs. Although he still competes on a global scale, his time now is mostly dedicated to working at Lisbon's pristine battle facility that's popular with both locals and tourists alike. Trainers that win 30 battles in a row can have an opportunity to battle him. When João is not tied to the battle facility, he can often be found going for long boat rides on the ocean.

João received his first Pokemon, Quaxly, from the professor in Lisbon. It also serves as his ace as a Quaquaval.