|Photo Credit by Maxibostero|
God Serena is quite the quirky individual, with Makarov going so far as to call his personality an overall disappointment. He is extremely flamboyant and has a taste for standing in the spotlight, and performing dramatic and unnecessary gestures while conducting a simple conversation. This habit is accompanied by an extremely strong sense of confidence, allowing him to not only easily shrug off blatantly negative comments regarding his behavior, but actually treat them as compliments. God Serena has also shown himself to be quite condescending, antagonizing his foes after a crushing victory. Additionally, upon approaching a dying Warrod, God Serena has shown himself to be exceedingly arrogant as well, giving Warrod the name-encompassing send-off message of "God bye-bye" (ゴッドバイバイ Goddo Bai Bai).
God Serena very readily expounds upon his own arrogance via his banter towards his former Saints, citing that, upon their readied counterattack, that they aren't completely pathetic. Indeed, Hyberion himself even described God Serena's hubris as ridiculously great. However, upon releasing his true strength as a Dragon Slayer, God Serena's calm facade all but vanishes, and he realizes himself to be extremely bloodthirsty, without hesitation utilizing three of his eight Dragon Slayer Magics to wound his foes mortally before preparing to use a fourth to finish the deed. Upon being told to desist, God Serena showcased a malicious grin and sarcastically questioned if his actions would qualify as being overzealous. God Serena also takes his standing as a Dragon Slayer very seriously, and has the utmost faith in his power, making the claim that all Dragons would be naught but fodder before his might. Not much later, upon seeing the mighty Acnologia appear before him, God Serena, before being gravely injured, expressed excitement, as well as surprise, at the appearance of the Dragon King, who he claimed had been eluding him for quite some time, and even began to imply that his sole reason for defecting to the Alvarez Empire was to locate Acnologia and slay him.
Dragon Slayer Magic (滅竜魔法 Metsuryū Mahō): God Serena has control over an impressive eight Dragon Slayer Magics of varying elements, which he owes mastery over to the implantation of Dragon Lacrima (effectively christening him as a Second Generation Dragon Slayer); such usage and mastery earned him the epithet "Hybrid Theory" when he defected to the Alvarez Empire. However, of said eight Dragon Slaying Magics, he has only utilized four, and when he unleashes his true power and activates his Magic, his sclera turn pitch-black, his irises become extremely small and completely white, and he attains the trademark sharp teeth associated with all other Dragon Slayers.