Stride is a member of the ancient order of the Tiger Fighters who fights for honor above all else.
In the past Stride once fought side by side with King Alfor of planet Arus.
When King Zarkon was preparing a new campaign of conquest, and invited Stride to Planet Doom. Zarkon requested the help of Stride, who eventually agreed and flew off in his Tiger fighter.
Stride arrived on Arus near the Castle of Lions, and challenged Keith to a duel. Keith accepted Strides challenge to a duel.
Stride and Keith duel one on one in their ships. Eventually Stride and Keith get in a sword duel. After Stride wins the duel he spares Keith. Queen Merla then appears, and attacks both everyone with a Robeast.
The lions form Voltron and defeat the Robeast. Keith asks Stride to join the Galaxy Alliance, but Stride declines before flying off.