Tron uses a "Heraldic Beast" Deck highly focused around Xyz Summon tactics. He also utilises a large quantity of level modulation cards such as "Level Solidarity" to make Xyz Summoning high RankXyz Monsters easier.
Scarecrow uses a "Scarecrow" Deck focused around forcing her opponents to attack her "Scarecrow" monsters in order to destroy them through "Field of Screams".
Werewolf uses a "Werewolf" Deck centred around Tribute Summoning and gaining benefits from Tributing his monsters. He also uses a large amount of cards to protect his monsters such as "Crown of Immortality" and "Glory Level Talisman".