I am thinking about replacing MegaZard. Is there any other mega pokemon that could run goos with my team?
Other Mega Pokemon to consider are Mawile, Aggron, Venusaur, Pinsir, Scizor and Lucario. Mawile, Aggron, Scizor and Lucario have the Steel type, letting them resist Goodra's weaknesses. Venusaur resists Goodra's Fairy weakness. Pinsir is neat to have because you have a Rapid Spinner in Tentacruel:
Mawile:
-Play Rough
-Sucker Punch
-Fire Fang/Swords Dance/Iron Head
-Swords Dance/Substitute
Nature: Adamant
EVs: 132 HP/252 Atk/124 Spe
Item: Mawilite
Ability: Intimidate
or
-Rest
-Sleep Talk
-Play Rough
-Foul Play
Nature: Impish
EVs: 248 HP/252 Def/8 SDef
Item: Mawilite
Ability: Intimidate
Aggron:
-Stealth Rock
-Iron Head/Heavy Slam
-Thunder Wave/Ice Punch
-Earthquake/Rock Slide
Nature: Relaxed
EVs: 252 HP/16 Def/240 SDef
Item: Aggronite
Ability: Sturdy
or
-Rest
-Sleep Talk
-Iron Head/Heavy Slam
-Earthquake/Ice Punch
Nature: Relaxed
EVs: 252 HP/16 Def/240 SDef
Item: Aggronite
Ability: Sturdy
Venusaur:
-Giga Drain
-Sludge Bomb
-Earthquake/Leech Seed
-Synthesis
Nature: Relaxed/Bold
EVs: 252 HP/88 Def/168 SDef or 252 HP/252 Def/4 SDef
Item: Venusaurite
or
-Giga Drain/Leech Seed
-Sludge Bomb
-Hidden Power (Fire)
-Synthesis
Nature: Modest
EVs: 252 HP/4 Def/252 SAtk
Item: Venusaurite
Pinsir:
-Swords Dance
-Return
-Earthquake
-Quick Attack
Nature: Jolly
EVs: 252 Atk/4 Def/252 Spe
Item: Pinsirite
Scizor:
-Swords Dance
-Bullet Punch
-U-turn/Bug Bite
-Roost
Nature: Adamant
EVs: 248 HP/152 Atk/148 SDef
Item: Scizorite
Ability: Technician
Lucario:
-Nasty Plot
-Aura Sphere
-Flash Cannon
-Dark Pulse/Shadow Ball/Vacuum Wave
Nature: Timid
EVs: 4 HP/252 SAtk/252 Spe
Item: Lucarionite
Ability: Inner Focus/Steadfast
or
-Swords Dance
-Close Combat
-Extreme Speed/Bullet Punch
-Crunch/Shadow Claw/Ice Punch
Nature: Jolly
EVs: 4 HP/252 Atk/252 Spe
Item: Lucarionite/Life Orb