Tai Kamiya:
* Agumon (Original form)
* WarGreymon (Episode 26, "The Digimon Emperor's Puppet") - Evolves during the battle against the Digimon Emperor
* MetalGarurumon (Episode 36, "A Digimon's Bonds") - Evolves with the power of the Digi-Egg of Light to counter the Digimon Emperor's power
* WarGreymon (Episode 47, "The Power of the Digi-Eggs") - Evolves with the power of the Digi-Eggs to defeat Millenniummon
* MetalGarurumon (Episode 48, "The Digimon Emperor Strikes Back") - Evolves with the power of the Digi-Eggs to fight the Digimon Emperor
Matt Ishida:
* Gabumon (Original form)
* Garurumon (Episode 25, "The Digimon Emperor's Challenge") - Evolves during the battle against the Digimon Emperor
* WereGarurumon (Episode 33, "The Digimon Emperor's Dark Power") - Evolves to counter the Digimon Emperor's power
* MetalGarurumon (Episode 48, "The Digimon Emperor Strikes Back") - Evolves with the power of the Digi-Eggs to fight the Digimon Emperor
Sora Takenouchi:
* Biyomon (Original form)
* Birdramon (Episode 23, "The Digimon Emperor's Plot") - Evolves during the battle against the Digimon Emperor
* Garudamon (Episode 38, "Sora's Destiny") - Evolves with the power of the Digi-Egg of Light to counter the Digimon Emperor's power
Izzy Izumi:
* Tentomon (Original form)
* Kabuterimon (Episode 24, "The Digimon Emperor's Plan") - Evolves during the battle against the Digimon Emperor
* MegaKabuterimon (Episode 39, "The Power of the Digi-Eggs") - Evolves with the power of the Digi-Egg of Light to counter the Digimon Emperor's power
Mimi Tachikawa:
* Palmon (Original form)
* Togemon (Episode 22, "The Digimon Emperor's Trap") - Evolves during the battle against the Digimon Emperor
* Lillymon (Episode 40, "The Digimon Emperor's Trap") - Evolves with the power of the Digi-Egg of Light to counter the Digimon Emperor's power
Joe Kido:
* Gomamon (Original form)
* Ikkakumon (Episode 21, "The Digimon Emperor's Target") - Evolves during the battle against the Digimon Emperor
* ZeedMillenniummon (Episode 49, "The Final Battle") - Evolves with the power of the Digi-Eggs and the Digi-Egg of Destiny to defeat Millenniummon
TK Takaishi:
* Patamon (Original form)
* Angemon (Episode 27, "The Digimon Emperor's Puppet") - Evolves during the battle against the Digimon Emperor
* MagnaAngemon (Episode 45, "The Power of the Digi-Eggs") - Evolves with the power of the Digi-Eggs to fight the Digimon Emperor
Kari Kamiya:
* Gatomon (Original form)
* Angewomon (Episode 29, "The Digimon Emperor's Puppet") - Evolves during the battle against the Digimon Emperor
* HolyAngemon (Episode 46, "The Power of the Digi-Eggs") - Evolves with the power of the Digi-Eggs to fight the Digimon Emperor
Davis Motomiya:
* Veemon (Original form)
* ExVeemon (Episode 14, "Digimon Emperor's Orders") - Evolves during the battle against the Digimon Emperor
* Paildramon (Episode 41, "Davis and Veemon's Bond") - Evolves with the power of the Digi-Egg of Light to counter the Digimon Emperor's power
* MagnaAngemon (Episode 45, "The Power of the Digi-Eggs") - Evolves with the power of the Digi-Eggs to fight the Digimon Emperor
* Paildramon (Episode 48, "The Digimon Emperor Strikes Back") - Evolves with the power of the Digi-Eggs to fight the Digimon Emperor
Ken Ichijouji:
* Wormmon (Original form)
* Seadramon (Episode 18, "The Digimon Emperor's Arrival") - Evolves during the battle against the Digimon Emperor
* Stingmon (Episode 42, "The Digimon Emperor's Power") - Evolves with the power of the Digi-Egg of Light to counter the Digimon Emperor's power
Yolei Inoue:
* Hawkmon (Original form)
* Aquilamon (Episode 16, "The Digimon Emperor's Revenge") - Evolves during the battle against the Digimon Emperor
* Halsemon (Episode 43, "The Digimon Emperor's Trap") - Evolves with the power of the Digi-Egg of Light to counter the Digimon Emperor's power
* Silphymon (Episode 48, "The Digimon Emperor Strikes Back") - Evolves with the power of the Digi-Eggs to fight the Digimon Emperor
Cody Hida:
* Armadillomon (Original form)
* Ankylomon (Episode 19, "The Digimon Emperor's Scheme") - Evolves during the battle against the Digimon Emperor
* Digmon (Episode 44, "The Digimon Emperor's Ambition") - Evolves with the power of the Digi-Egg of Light to counter the Digimon Emperor's power
* Craniummon (Episode 49, "The Final Battle") - Evolves with the power of the Digi-Eggs and the Digi-Egg of Destiny to defeat Millenniummon
Let me know if you want more details about specific episodes or evolutions!