So, let's say I want a Scrappy Panchum. Can I breed an Iron first Panchum to get a Scrappy Panchum?
You can only get a scrappy pancham if you breed a female pancham with scrappy and another mon from panchams respective egg group
Since the 6th generation
Depending On if you have a male or female with a HA you will either have a
20% of passing on with only a male
60% of passing on with only a female
and an 80% chance with both parents having the hidden ability
-Source Experience and Serebii Article