Type: Steel/Bug -> Steel/Bug
Ability: Swarm/ShellArmor/Overcoat -> Paladin (Non-STAB attacks from enemies do 25% less damage. Pokemon also does 25% more damage to ghost, dark, dragon and faeries.)
New Moves: Attack Order, King's Shield, Sacred Fire
HP: 70 -> 70
Atk: 135 -> 165 (+30)
Def: 105 -> 145 (+40)
SpA: 60 -> 70 (+10)
SpD: 105 -> 105
Spe: 20 -> 40 (+20)
Concept: Mega Esca throws away its wily nature and becomes a paladin!
I'm glad you asked, ye dumb witted Avatar. The Paladin is a bad ass. He serves his god or king with glory and power, and in this case gaining orders, shields and even fire itself from both sources. He often has magic, usually holy, that grants him added survival or the ability to smite evil. While the overall bonuses are only 25%, the cumulative ability to do both is very good. Keep in mind that even moves with set damage will be reduced, so Blissey's Seismic Toss will only do 75 damage instead of 100.
Despite his resistances and power, this paladin forgot to grab healing, so while an excellent slayer of evil and guard, some shmuck forgot to get healing specs, dumb retnoobs! Have a wish handy.
I'll let Spoony explain why you should vote with your awesome genes and sort out reason later: