Jolly Balloon Man - Help me understand

Using [[The Jolly Balloon Man]], how was my opponent able to create (4) copies of the white [[Beast]] creature token that is generated from [[Toby, Beastie Befriender]]? Aren't copies supposed to be 1/1 Red Balloon creatures and aren't they supposed to be sacrificed at the beginning of their next end step?

What am I missing?