Johnathan I'sdelf Averardus P. Pavlon

Johnathan (Full name: Johnathan I'sdelf Averardus P. Pavlon, I'sdelf meaning "tireless warrior" in the ancient Eldaernth language) also known as Monsieur Aver, Sonero John, his nick "John", and in royalty as Prince John, is the fourth child and second son of King Arkus and Queen Erza, the second Everglorian Prince, and the identical twin brother of Princess Clarisse. Johnathan, out of the five Pavlon children, is the man most dedicated to duty and has an impregnable will to keeping innocents safe no matter the costs. Besides Pen, John is a very honorable, respectful and righteous man, tending to keep undying loyalty to his allies. He is the only one to have instantaneous ambitions to serve the military and to pursue a musical career.

The night after Everglorian downfall, John with his siblings, along the other survivors, make a hard trek to seek refuge in Lorefam Castle, only to land on the outskirts of Okko Puro by a series of jinxes. Despite his strong will to help Marie and Pen, John and the others needed to stay at home lest he risk execution by the Serrans. During this period of time, John's hatred of injustice had condensed even further. He composed a number of ballads and melodies, which although were perceived as catchy and pleasant, had actually aggressive subversive undertones. With the plans of Marie and Malruthiia, John's compositions were accepted and utilized to recruit new members and spread propaganda. John was also one of those on the front lines, bravely combating the armed Serrans with weapons looted from captured Serran bunkers.

After the Pavlon children had regained royal status, John discussed his interest in the military to Sir Knight Promptous, to which the former Everglorian right-hand royal guard agreed to put him under training and strict regimen (albeit for a longer period of time as it was controversial for royalty to join military) to be accepted in his league. After then, John had finally entered the league, yet it required him to work away from his siblings as it was international. As a paladin recruit, he was called "Sir John", afterwards then used more frequently than the royal "Prince".

Eventually after maintaining an impressive and promising performance, Sir John came to be known as "The Rose Knight", after his notable love of roses. This epithet was later used to be John's public alias in his later crusade against injustice.