

He is a skilled con man, rivaling Xanatos in terms of his intelligence and cunning.

He also seems to have something like the Oedipus complex both in his attempt to kill his "father" and in choosing a mate (first Demona, who was Goliath's mate, then Delilah, a hybrid clone created from the DNA of Demona and Elisa). He exhibits sociopathy to the point of being even shorter than Demona, and at times seems to be completely aware and comfortable with his own evil nature. In terms of personality, Thailog is the polar opposite of Goliath: completely cunning and deceitful, he is willing to betray anyone for his own sake, and he not only exhibits a complete lack of protective instincts of the gargoyle but actively seek to cause pain and suffering. ~ Xanatos and Owen discussing how dangerous Thailog is after having faked his own death and made off with Xanatos’ money. Xanatos: Owen? I think I've created a monster. Owen: You mean that creature is still out there? It has the money, it's as powerful as Goliath, and it's smarter than you Thailog's intellect and personality are the product of artificially accelerated growth and the subconscious education program of Anton Sevarius and David Xanatos. He usually wears battle armor and a helmet, which he obtained after escaping from Black Rock Point, although he is sometimes seen wearing no armor or other clothing, such as such as the Roman toga. As a result, his hair is pure white, his eyes are dark red, his skin is dark purple/indigo, and his wing membranes are pale lilac.

Physically, Thailog is a perfect Goliath clone, sharing the same form, extraordinary strength, and voice although there are pigment changes and marks due to its artificially accelerated aging process.
