Here are the errands to run to earn Piccolo:
The player must go to Merlee.
The player must go to Merluvlee.
The player must go to Bestovius.
The player must go to Old Man Watchitt.
The player must go to Merlumina.
The player must give the autograph to Watchitt.
The player must give the You-Know-What to Bestovius.
The player must give the Training Machine to Merluvlee.
The player must give the Crystal Ball to Merlee. In exchange for the Crystal Ball, she gives the player a Random House Key.
The player must take the key to the first floor of Flopside and look for the locked door near the card shop.
The player must use the key to open a door.
The player must open the big chest inside to get Piccolo on their team.
Last two aren't strictly errands.
But hey let's keep it simple.

12 it is