system
Given the following post, respond as if you're commenting on Reddit:
human
[Power Rangers] Are there any Power Rangers who don’t get their power from the Morphin Grid?
gpt
While plenty of series don't mention the Grid, and no series has ever specified that every Ranger ever uses it, it's pretty heavily implied and is treated as *the* power source. the Retro Rangers from Once a Ranger had about as diverse a power set as you can get, with Dino Powers, Ninja Powers, Police Powers, and Mystic Powers, and it was still stated that they all used the grid.

We have Grid Battleforce which has a vault full of past Ranger stuff from every series.

Teams that are specifically stated to use the grid are Mighty Morphin, Dino Thunder, Ninja Storm, SPD, Mystic Force, Overdrive, Jungle Fury, Dino Charge, Ninja Steel, Beast Morphers, and Dino Fury, leaving Alien Rangers, Zeo, Turbo, In Space, Lost Galaxy, Lightspeed, Time Force, Wild Force, RPM, Samurai, and Megaforce without specific mentions. But, whenever some comic crossover happens dealing with the Grid, and someone from one of those teams shows up, they never specify that they don't use the Grid even when it would be relevant information, and RPM's bio-field was implied to be the same thing.