We're not going to get into the debate about whether or not Cristiano Ronaldo is better than Lionel Messi - that's for someone else to decide - but we can say that he's probably one of the two very best footballers who ever played the game. He's also a narcissist, and a whiner. Ronaldo's play acting and diving has led to opposition players being sent off on multiple occasions; most notably his former team mate Wayne Rooney at the 2006 World Cup. When things don't go Ronaldo's way, he throws temper tantrums on the pitch, and has frequently threatened to leave clubs because he wasn't getting what he wanted. He's also been prosecuted for trying to avoid tax.
He is as generous as he is vain, though. When he was awarded $600,000 in bonuses after Real Madrid won the Champions' League in 2016, he gave the whole amount to charity. He also personally donated $5m to a disaster relief fund in Haiti, and has been repeatedly known to pay for medical treatment for sick children.