Since you guys are wizards at this, help me out. These are the details I recall:
Sega Genesis
RPG (95% sure it was a JRPG)
Large number and variety of party members
Some kind of grid layout for battles
Large number of characters brought into battle (Eight? maybe more)
One part of the story involved ascending a mountain, then going inside a cave/chamber where a/the boss baddies were waiting for you.
0
Posts
https://youtu.be/eXOmHRyqwpg?t=3038
https://youtu.be/aPvcSyD4MSk?t=6400
(Warsong was known as Langrisser in Japan and had several sequels that never made it out here)
My Backloggery
PC game, early 90s
Arcade-style maze shooter with 16 bit graphics.
Hero was blue and there was a futuristic, sci-fi setting
Game over screen had Chopin's Funeral March and the words "Another One Bites The Dust"
Might have been developed in the UK?
That's a PS1 game with a 6 player party cap. Doesn't really fit.
Shining Force 2 still sounds the most likely to me. I don't remember the first one very well, but you definitely do the climbing a mountain into a boss battle at least once in 2. You meet the bird people there as I recall if that rings a bell.
More visual information please, what perspective, map, etc