It already came out. It came out in 2012 and I think they are still making more episodes.
Your rival gets whichever Pokemon type yours is weakest to. ie you take the water, rival takes the grass.
Your rival will have Chikorita if you pick Totodile as your starter pokemon.
You actually get to name your rival. So, your rival is whoever you want him to be. The rival is just a strange character that happens to be eying Professor Elm's Pokemon.
The champion is your rival.
Your rival is the red head named ???
your rival would pick a water type Pokemon which is a squirtle
your rival is a boy name him whatever you want
you can name your rival's name whatever you want.
You only have one rival (or do you mean the second time you battle your rival?)
Your Rival
your rival
piplup