Get rings and hopefully you will get it
Give it a heart fruit
Buy it at the Black Market.
Yes.
Give each chao a heart fruit (buyable at the black market) and wait for them to have flowers around them. It may take a few heart fruit to get flowers but when you do, you set them next to each other.
In Sonic Adventure 2 battle a chao that looks like sonic would be neutral/running/running you could give it chao fruit just as long as the skill with the highest level is running for both evolutionary cycles.
No as Sonic Advance 2 came out after Sonic Adventure 2 Battle and Sonic Adventure 2 Battle was only made to be compatible with Sonic Advance.
Buy heart fruit and give it to your chao and he will mate
after sonic battle 1, but before sonic battle 3
Sonic adventure battle 2
Rouge can be played as in... Sonic Adventure 2 Sonic Adventure 2 Battle Sonic Battle sonic riders That is all I can think of.
There is no Sonic Adventure 4 Battle, there is Sonic Adventure 2 Battle but that was released 8 years ago.
Sonic Adenture 2 is the original game for the Dreamcast and Sonic Adventure 2 Battle is a remake for the Gamecube. Sonic Adventure 2 Battle has better graphics, chao karate class, chao activities and chao shops.