Unlocking with shards

Count_Dook_eww

New player here.... When you unlock a character by getting the necessary shards, are the shards consumed and the character starts at 1 star? Or is it based on the amount of shards to unlock? 10 shard toons, 25 shard toons. 50 shard toons, and 80 share toons, being 1 star through 4 star respectively.....

Heronmar

10- 1 star
25- 2 stars
50- 3 stars
80- 4 stars