Flygon-Mega
Ability: Levitate ---> Tinted Lens
Typing: Ground / Dragon
Stats:
HP 80 ---> 80
Atk 100 ---> 125 (+25)
Def 80 ---> 90 (+10)
SpA 80 ---> 120 (+40)
SpD 80 ---> 85 (+5)
Spe 100 ---> 120 (+20)
BST 520 ---> 620 (+100)
New Moves: Quiver Dance, Lunge
Description: Flygon becomes a much more versatile attacker with this upgrade, allowing it to effectively tap into its special move pool which includes moves such as boomburst and earth power. These moves are also boosted by its new included move, quiver dance. This makes flygon an effective setup sweeper on both the physical and special sides, as it already possesses dragon dance to boost its attack, and a decent movepool on the physical side too, including EQ, crunch, and now lunge, a decent bug STAB to mix well with its design influence. Speaking of which, flygon-mega keeps its antlion influences, and really drives home in on the actual insect's appearance. Flygon-mega has another set of wings, and its body gets more slender. Its tail also gets much longer. To mesh well with the large, bug-eyes on flygon, the ability mold breaker to me seemed like a good fit (mold breaker allows you to hit things abilities prevent right, well wouldn't large eyes help with that. I get compound eyes or something would make more sense but back off).
Drapion-Mega
Ability: Battle Armor / Sniper / Keen Eye (H) ---> Corrosion
Typing: Poison / Dark
Stats:
HP 70 ---> 70
Atk 90 ---> 105 (+15)
Def 110 ---> 130 (+20)
SpA 60 ---> 70 (+10)
SpD 75 ---> 115 (+40)
Spe 95 ---> 110 (+15)
BST 500 ---> 600 (+100)
New Moves: Psychic Fangs, Baneful Bunker
Description: Its a scorpion, it's meant to poison things. Ability corrosion helps drapion accomplish this, making toxics from this monster a nuisance to deal with. It's moderately fast while maintaining its decent 105 attack and good defenses at 130 and 115. With only a single weakness, mega-drapion has very little in its way from stalling, setting up its hazards, or setting up for a sweep. it is held back by its ok movepool, but with the addition of psychic fangs to round out it's "Fang collection" and baneful bunker, it makes for an improvement.
Gliscor-Mega
Ability: Hyper Cutter / Sand Veil / Poison Heal (H) ---> Triage (if we could rename it to fit the vampire theme, that'd be cool)
Typing: Flying / Dark
Stats:
HP 75 ---> 75
Atk 95 ---> 110 (+15)
Def 125 ---> 140 (+15)
SpA 45 ---> 65 (+20)
SpD 75 ---> 120 (+45)
Spe 95 ---> 100 (+5)
BST 510 ---> 610 (+100)
New Moves: Leech Life
Description: Triage? Well, it fit well considering that gliscor is like a bat-scorpion amalgamate, and I was going for a vampire theme. this allows it to use roost and it's new found leech life to "drain" enemies faster. this increases its survivability, especially since it misses poison heal, and it wouldn't be used much of the time anyway. The Dark typing also fits my "spooky vampire" theme. This typing gives 1 additional weakness but also reduces its 4X weakness to ice to a 2X, and additionally grants it a psychic immunity.