Perios

A somewhat unusual looking character with blue-green hair and a sarcastic streak, Jesse Blue was a promising cadet at Cavalry Command until he fell in love with April Eagle during a training exercise. When April rejected his advances and inadvertently embarrassed him in front of the other cadets, he turned against the Star Sheriffs and cultivated a personal grudge against Saber Rider, thinking it was April's affection for Saber Rider that made her refuse his love.

(Source: Wikipedia)