Luis Suarez
Suarez emerged as one of the best soccer players on the planet during his time with Liverpool. But he also had a close relationship with the dark side as fans saw on multiple occasions. He infamously bit Branislav Ivanovic in 2013 and received a 10-game ban for good measure (via Marca).

This seedy superstar committed an even worse offense in 2011 when he racially abused Patrice Evra. The Premier League suspended him for eight games and it stained Suarez’s career. However, his team shockingly supported him by wearing t-shirts with his face on them.