What is Mugen?
My personal favorite sites are mugenation.net and mugen-infantry.net you can find almost anything for mugen.
tape batman and look in esnips.com if you can't find him look in mugen's
www.esnips.com search the naruto characters u want, and put mugen in the front always, like mugen sasuke
No where
To find Inuyasha Mugen, you can try searching on websites like Mugen Free For All, Mugen Archive, or by using search engines. Make sure to download from reputable sources to avoid malware or viruses. Keep in mind that downloading fan-made Mugen content may violate copyright laws.
There are many mugen screenpacks . Most of which you can get at mugenation.net or mugen-infantry.net . when you find the one you want download from authors site and unzip to your mugen folder.there you go! NOTE: backup your select.def file before unzipping so you can add easier. :)
In he game
amazon.com search it
scruffydragon.com
The Everything vs Everything screenpack is free, just check out sites like Mugen Databse. However, you have to manually download characters. Usually full rosters of EvE(everything vs everything) can be over 5-10 gb.
on www.marat's mugen archive there should be a robotnik boss pack and a sonic character pack and on mugen masters there should be a sonic battle pack but no super sonic. www.marat's mugen archive there should be a robotnik boss pack and a sonic pack and on mugen master's there should be every character for sonic battle.