I did a 10x pull during the event and got 3 Falcons and 2 Jackals. 
My first Falcon is 4/21 and my first Jackal is 4/32 right now - I hope to max them in the next week or two.
The lame thing is you only get the family bonus for unique heroes. Really takes out the incentive to level up (or even keep) the dupes.