Well you don't.Bass makes his first appearance in MegaMan7 and MegaMan 5 is like all things Proto Man.
Find bass after he has fused with gospel
Nope. He has to share a game with megaman in "Megaman & Bass" for the SNES and GBA.
Nope, but you can get a chip from Bass.
i dont not if this is right but you must beat bass in nebula hole 6
bass hates megaman for stopping him from destroying humanity
yes, but you need a game shark
the samw way you find him in Gregar , go to the undernet zero from green area ( examine the back of the big tree in green area 2 ) move around until you find Bass and defeat him , then go to the Graveyard and defeat Bass SP ( you need all the standered chips to battle him ). if you have already done this , just go to underground 2 , go to the plateform where you battle Falzar Beast megaman . you will battle Falzar Beast megaman SP first , then you will battle Bass BX .
No
This, like all "who is better" questions, is subjective. Each character has their own advantages when playable in Megaman and Bass, and they each have cool aspects. However, I personally think that Bass is much "better" than Megaman: his attacks in Megaman and Bass are much more useful against enemy swarms, he is somewhat more versatile, and in general he is just a bad*ss. However, you should draw your own conclusions.
bass
Square Enix
I think it may be in the japanese version only