Ideal Opponents (Excadrill)

Unova Leaders: Chili, Elesa, Brycen, Roxie
Kanto Leaders: Brock, Surge, Janine, Giovanni (with Lightningrod)
Johto Leaders: Falkner, Bugsy, Pryce
Hoenn Leaders: Roxanne, Wattson, Flannery 
Sinnoh Leaders: Fantina, Byron, Volkner (Candice?)
World Leaders: Surge, Bugsy, Janine, Roxanne, Flannery (if Torkoal dies)
Champion: Red, Wallace, Steven


Type Expert Possibles (or evo lines):

Normal: Stoutland, Braviary, Sawsbuck, Clefable
Fighting: Emboar, Gurdurr, Scrafty, Sawk, Throh, Heracross, Mienshao, Cobalion, Terrakion, Virizion, Toxicroak, Poliwrath
Flying: Swoobat, Braviary, Mandibuzz, Sigyliph, Archeops, Drifblim, Mantine
Poison: Muk, Garbodor, Roserade, Amoonguss, Drapion
Ground: Excadrill, Seismitoad, Gliscor, Mamoswine
Rock: Terrakion, Tyranitar, Gigalith, Crustle, Archeops
Bug: Volcarona, Heracross, Pinsir, Escavalier, Leavanny
Ghost: Cofagrigus, Jellicent, Chandelure, Drifblim, Banette, Golurk
Steel: Excadrill, Durant, Skarmory, Bisharp, Cobalion, Bronzong, Metagross
Fire: Emboar, Volcarona, Chandelure, Darmanitan, Arcanine
Water: Jellicent, Golduck, Floatzel, Alomomola, Seismitoad, Starmie, Walrein, Mantine, Lapras, Poliwrath
Grass: Sawsbuck, Amoonguss, Lilligant, Leavanny, Roserade, Virizion
Electric: Electivire, Magnezone, Ampharos, Eelectross, Galvantula, Electivire, Stunfisk
Psychic: Swoobat, Musharna, Sigyliph, Gothitelle, Reuniclus, Starmie, Bronzong, Metagross
Ice: Beartic, Cryogonal, Lapras, Walrein, Weavile, Vanilluxe, Mamoswine, Dewgong
Dragon: Flygon, Haxorus, Altaria, Druddigon, Hydreigon 
Dark: Hydreigon, Tyranitar, Crawdaunt, Liepard, Krookodile, Scrafty, Zoroark, Drapion, Absol, Bisharp, Weavile

Type Expert Possible with Dual Types:

Normal: Braviary, Sawsbuck
Fighting: Emboar, Scrafty, Heracross, Cobalion, Terrakion, Virizion, Toxicroak, Poliwrath
Flying: Swoobat, Braviary, Mandibuzz, Sigyliph, Archeops, Drifblim, Mantine, Gliscor
Poison: Roserade, Amoonguss, Drapion
Ground: Excadrill, Seismitoad, Gliscor, Mamoswine
Rock: Terrakion, Tyranitar, Crustle, Archeops
Bug: Volcarona, Heracross, Escavalier, Leavanny
Ghost: Jellicent, Chandelure, Drifblim, Golurk
Steel: Excadrill, Durant, Skarmory, Bisharp, Cobalion, Bronzong, Metagross
Fire: Emboar, Volcarona, Chandelure
Water: Jellicent, Seismitoad, Starmie, Walrein, Mantine, Lapras, Poliwrath
Grass: Sawsbuck, Amoonguss, Leavanny, Roserade, Virizion
Electric: Magnezone, Eelectross, Galvantula, Stunfisk
Psychic: Swoobat, Sigyliph, Starmie, Bronzong, Metagross, Latias
Ice: Lapras, Walrein, Weavile, Mamoswine, Dewgong
Dragon: Flygon, Altaria, Hydreigon, Latias
Dark: Hydreigon, Tyranitar, Crawdaunt, Krookodile, Scrafty, Drapion, Bisharp, Weavile