Yang and the Yellow Ranger. Yang is a strong and fiery character in RWBY, known for her brawling combat style. The Yellow Ranger in many Power Rangers shows is also a strong fighter. They could bond over their love for a good fight and share tips on how to improve their physical combat skills. Plus, their personalities are quite compatible, with both being bold and confident.
Blake and the Blue Ranger. Blake is more of an agile and stealthy character in RWBY, with her ability to create shadow clones. The Blue Ranger in some Power Rangers series is often associated with intelligence and strategy. Their pairing could result in some interesting combinations of stealth and strategic planning, like using Blake's clones for diversions while the Blue Ranger formulates a battle plan.