Ryoma Akagi

Towa Akagi was Twilight and the Dark Knight Ranger until he became the Royal Force Gold/Silver/Bronze Ranger of the Royal Force Rangers.

Dark Knight Ranger
TbA

Trivia

 * He is very similar to Misao Mondo from Dobutsu Sentai Zyuohger and Isamu Ozu from Mahou Sentai Magiranger, though his face claim is Towa from Kishiryu Sentai Ryusoulger.