Final answer:
Rainbow Dash's partner at the Wonder bolt Academy was Lightning Dust, a character who displayed ambitious but reckless qualities that challenged Rainbow Dash's views on safety and teamwork.
Step-by-step explanation:
At the Wonderbolt Academy, Rainbow Dash's partner was named Lightning Dust. When Rainbow Dash attended the Wonderbolt Academy, she was paired up with Lightning Dust, a fellow pegasus who was ambitious and talented, but also reckless. This character dynamic is explored in the episode where Rainbow Dash faces challenges due to Lightning Dust's aggressive flying techniques. Eventually, Rainbow Dash's concerns about safety and teamwork are validated, distinguishing her as a leader and a responsible Wonder bolt in training.