Yggdrasil then sent the Royal Knights to delete all Digimon with the X Antibody, as to exterminate it.There are 13 Royal Knights total, however, the only Digimon known to be Royal Knights at this time are Omnimon, Gallantmon, Magnamon, Dynasmon, Lord Knightmon, Alphamon, and Alforce V-Dramon Craniummon, Selphimon
 
   

 
Down Below is 8 out of 13 royal knights i'll put more if I can find them      

Name: Omnimon
Level: Mega
Attacks: Grey Sword
Garuru Cannon
Protect

Name: Gallantmon
Level: Mega
Attacks: Final Elysian
Royal Saber
Protect

Name: Gallantmon Crimson Mode
Level: Ultimate/final
Attacks:  Invincible Sword
Quo Vadis
Protect

 

Name: Magnamon
Level: Champion
Attacks: Magna Blast
Magna Explosion

supposevely he started the royal knights

Name: Imperial dramon Paladin Mode
Level: Mega
Attacks: Omega Blade
Giga Death

Name: Dynasmon
Level: Ultimate/Finale
Attacks: Breath of Wyvern
Dragon's Roar
Protect

Name: Alforce V-Dramon Zero
Level: Ultimate
Attacks: Shining V Force
Al Force Saber
Protect

 

Name: Alforce V-Dramon Zero Ultimate
Level:Ultimate/Finale
Attacks: Alforce V Saber
Shining V Force
Tense Great Shield

Name: Alphamon
Level: Mega
Attacks: Digitalize of Soul, Great Dragon's Ultimate Vanguard Sword

 

Name: Alphamon Ultimate War Blade King Dragon
Level: Ultimate/Finale
Attacks: Kyuukyoku Senjin Ou Ryuu Ken
Digitalize of Soul
Protect

 

Name: Lord Knightmon
Level: Ultimate/Final
Attacks: Argent Fear
Spiral Masquerade Protect

 

 

Name: Craniummon
Level: Ultimate/Final
Attacks: End Waltz
God Breath
Protect

 

BIG AND NEW!! A NEW ROYAL KNIGHT!!!!!!!

Name: Selphimon
Level: Ultimate/Final
Attacks: UNKNOWN!!!