Talk:Heroes/@comment-26711756-20150716174053/@comment-4010041-20150717025052

That number is how many EXTRA copies of that General that you currently own.

In the case of your Jada, you own 1 EXTRA copy of her (for a total of 2). Since she is currently at 1 star, you could now promote her to 2 stars, after which that number would go back to 0 since you would no longer own any EXTRA copies of her.

See the General Promotion section above for more info...