Dagon

Diagon is an alien who is believed to have visited Earth many years ago and gave Human machines. He is believed to have sworn to come back to Earth and bring the "Golden Age". He said he will bring alien tech so the world have no war, no disease, just peace. Vilgax was mistaken for and later pretended to be Diagon in The Flame Keepers' Circle. Diagon is in fact an extra-dimensional monster who tried to invade this dimension with help from the Lucubra during Earth's Medieval era. He was banished back to his dimension when Sir George defeated him after cutting out his heart with the sword Ascalon, a powerful weapon given to him by Azmuth.

Appearance
Diagon is shown to be similar to Vilgax's true form; a giant squid as Ben finds Vilgax in the secret room inside head-quarters of the Flame Keeper's Circle to whom the members of the cult worship as the knowledge bringer. But later in A Knight to Remember Diagon has taken control of Gwen Tennyson and uses her to communicate with Ben that his pretender Vilgax attempts to steal the source of his strength, his heart. After that, Driscoll tells Ben that when the First Knight fought Diagon, he reveals that Diagon's true form is somewhat like a Dragon. In Solitary Alignment and A Knight to Remember, it is hinted that he is very horrible-looking, as he scared Gwen in A Knight to Remember, and scared Ben, Gwen and Kevin in Solitary Alignment. Azmuth and Sir George do not seem to be that scared of Diagon. They have probably gotten used to the sight of it.

Powers and Abilities
Diagon has the power of mind control like the Lucubra, albeit more powerful. Diagon's mental mastery is so powerful that a being like the Lucubra is like an insect by comparison. He is also shown to have powerful fire breath, like most dragons.

Appearances

 * A Knight to Remember (flashback)2011-12-03_1808.png
 * Solitary Alignment

Trivia

 * In A Knight to Remember when Vilgax got Diagon's powers, Diagon made Vilgax go to his dimension.
 * According to Gwen, Diagon's mind control is more powerful than the Lucubra's.
 * He shares some similarites with Cthulhu: both are aliens, both have mind controling powers and both look like a octopus.
 * Diagon having no heart is similar to Davy Jones (Pirates of the Caribbean) having no heart either.
 * His dragon form is similar to that of Malchior of Teen Titans animated series.
 * Diagon is also the ruler of the Lucubras, as shown as they are his minions.