The Ministry of Arcane Sciences, M.A.S. for short, is one of the six ministries. It was created by it's current leader, Twilight Sparkle. However, it is it's co-leader, Moneyshock, who leads of the small ministry locations out of equestria. The authorities are:

Co-Leader:
Moneyshock

Assistant Co-Leader:
I AM CoolBernardo

Lead Security Officer:
Zackmanwp

Lead Scientist:
-None yet. Scientists, keep up the good work and you might be promoted!

#1 Assistant:
BronyThePony