Icy and Tritannus

Icy and Tritannus were a couple featured in Winx Club, seen only in Season 5. Both were convicted criminals by the time they met; their shared goals, views, mutual understanding between one another and hatred towards those who intercepted their plans paved way for an immediate attraction. Icy fell in love with Tritannus after she witnessed his monster transformation after absorbing toxic pollution from an oil spill on Earth, and turned the prison guards into his mutant minions. However, when Tritannus finally activated the Emperor's Throne in the season finale, he turned on Icy and that caused Icy to break up with Tritannus.

Overview
Icy first met Tritannus at the end of "The Spill" as he had been sent to the Prison of Andros for attempting to prevent he twin brother, Nereus, from being chosen as the crown prince. They saw eye-to-eye in an instant and it was in the next episode "Rise Of Tritannus" that they officially became a couple. And as the season went on, their love for each other kept growing stronger, as did Icy's ignoring her sisters Darcy and Stormy. After they enter the Infinite Ocean in the episode "The Emperor's Throne", Tritannus tells Icy his plan: to activate the Emperor's Throne and rule the entire Magic Dimension, he also tells Icy that she would be his empress.