Both have the main heros using electric powers and have their villian group fall due to infighting among themselves

Both are very mobile riders. While Hibiki has a home base he is frequently shown camping and training looking to fight monsters. Stronger does not have a place to stay and is always traveling looking for an enemy plot

They both have brutal fights that often show the monster bleeding and dismembered with a sometimes strange amount of gore

Both star main characters that grew up in the jungle. While gekiranger takes a more light hearted approach to that both do show the main characters having to adjust

Cyborg protagonists fight against evil to protect the innocent. Both have a darker tone to start with but both lighten up as the shows go on

Both have our heros family being killed at the start of the show with them then being rebuilt into cyborgs wage a never ending battle against evil

Both the start of legendary toku series. Both involve cool planes awesome but old special effects and so many monsters

Both the start of legendary toku series. Both star a single hero fighting for justice have wonderful special effects and amazing monsters

The start of two legendary toku series both give you a classic special effects episodic story telling and great monster designs.

Be are old toku with similar special effects both are light heart series where the enemies cause a lot of mischief the main characters both have kid companions

Both have a similar approach to realism in terms of monster attacks. Also Goyellow reminds me of ultraman Leo's human form in terms of personality with both being hot heads that go though a lot of training

I feel like cosmos continues on the themes of Gaia, there is a sense of companionship between both ultras and their team and the Kaiju felt like a part of nature rather then just monsters