The Flash: Ranking Every Character From Worst To Best

The legend of the mysterious 'burning man' was one the debut season's many enticing undercurrents - and it was one that ended up having surprising ties to both the main narrative and one of the show's main characters, as it turned out that the thought-to-be-dead fiancé of Caitlin Snow, Ronnie Raymond had actually merged with Professor Martin Stein to become Firestorm.

Ronnie's introduction led to a number of, well, nuclear moments on the show as Robbie Amell instantly made the character a likeable addition to Team Flash. However, during that short space of time, Ronnie had to learn to accept the woman that his "Caity" had become in his absence (just as she had to do the same with him) - which he did and, in spite of everything working against them, they managed to get married in a few sweet moments of bliss.

A beautiful relationship free of the soapy-drama that other Arrowverse couples fell victim to, the show (and Caitlin) just hasn't been the same without Ronnie as, even after all this time, he is still missed a great deal.