+Benjamin Baugh's hilarious class, the Goblin Enchantress. (Follow the link to see +Evlyn M's beautiful illustration in full size.)
Take a trait such as Goblin Enchantress or Zombie Master or Baker of Sentient and Homicidal Cupcakes. This
doesn't give you advantage to checks, nor does it grant you outside
help like an organisation. All you have is your band of fanatical
goblins, crazed cultists, animal automata, etc.
Write down Goons dR8 *
on you character sheet. They work as a group just like a follower (roll
the dR whenever they attempt something risky). A step down means some
of your goons died or were otherwise lost. As suggested by +guillaume jentey on G+, you can use your Goons dR as armour or as magical components.
If the dR is stepped down to
nothing, you have to attracts more goons. Wait d8 days and you'll have
your dR8 back - the referee can give you a smaller die in less time if
they so choose.
Whenever you roll the maximum result on the dR,
step it up. Either your goons get smarter/stronger/better at working
together, or more of them just show up.
* In Macchiato Monsters, a risk die (dR) is a die that represents a resource or threat. On a 1-3, it is stepped down to the next lower die type (d12>d10>d8>d6>d4).