Red Sentinel

The Red Sentinel is the leader of the Powerful Sentinels of Earth-7102. Of course he's the leader, because he's red.

Biography
One day 5 guys found some coins, which turned them into the Powerful Sentinels. Their mission was to combat Rita Repulsa of Earth-7102.

One day, Red Sentinel landed on Earth-2 and met the original red ranger. They had a fight and ended up destroying each other. However, they ended up reviving again.

Behind the scenes
This is actually a costume for the Red Ranger of the Power Rangers 2017 movie. Kuroninja has shown a lot of hatred for red rangers because they get all the glory, even if they aren't the leaders.