Ron Mei is a fair-skinned girl who always seems to have a generally cheery expression. She has blonde hair and a small pair of wings on her back. Ron Mei also seems to keep her eyes constantly narrowed to slits, rarely ever opening her eyes enough to reveal their yellow colour. She tends to wear yellow-coloured clothing.
She has a very bright and cheerful personality, contrasting with the quiet and gloomy Varagarv. It is revealed that she was working with FUG, along with Varagarv and the rest of Team Mad Dog, showing a far more devious and a sinister side that is still hidden behind her smile. Although she also appears to be dimwitted at the same time.
At the beginning of the Workshop Battle, she is seen next to Viviolga observing the entry of Jyu Viole Grace and his team as well as Dede's request. She mentions that if Varagarv were present, either he or Viole would be dead already.
Due to her team's performance in the One Shot, One Opportunity game, Ron Mei was made to be one of the ten gamblers of the Workshop Battle.
She, along with Reflejo and other members of Team Mad Dog, is guarding the entrance to the Thorn. When Reflejo orders her to capture Hwa Ryun, Mei thinks that she committed suicide by jumping off a cliff.
Along with the Mad Dog, Mei attempts to prevent Viole's escape but he easily breaks through her shield. She again deduces that Hwa Ryun had suicided by leaping off another cliff with Horyang and Novick.
During a clash with Androssi and Hatsu in the final match, she explains how Varagarv had gained temporary invincibility through some Blood Tamaras. She proceeds to seal Androssi with her lighthouses though Hatsu destroys them before she is able to. Hatsu takes Mei as a hostage against Varagarv and the fight ends in their defeat. After the events of their battle, she is seen carried by Varagarv, saying that they'll have to wait for another chance to steal the seat of Slayer candidate.
When Jyu Viole Grace infiltrated the Regular Arena in order to search and rescue Deng Deng who was held captive, he encountered Varagarv along with Ron Mei. Varagarv directly charge at Viole to attack. Both of them then fought each other. Varagarv came out victorious and Ron Mei commented that Viole had become weak, but Varagarv quickly replied that Viole is not weak and he got injured after he punched Viole. Varagarv said Viole was was fooling around and intentionally surrendering himself. He then said that next time, he will make sure Viole wouldn't underestimate him again.
After Viole escape from prison, Varagarv and Viole have a re-match, Viole easily shoot him out of the base the with his new skill Streamflow, later claiming he has no time and wish to fight a opponent that weaker than him, which enrage Varagarv. Varagarv, with rage continue the fight, using the full power of Blood Tamara, which increase his fighting powers, but even then, The Mad Dogs can't even land a hit and was defeated after Viole use his new technique Zero.
When High RankerBaylord Paul suddenly appeared from inside the mouth of a white weird shinheuh, his green Shinsu pierced through the stomach and chest of Rian and Luka. Paul then commented that he has forgotten the smell of The Cage. Canhong tried to attack him, but Paul shot his green shinsu again and it easily pierced Canhong's body. Paul's strength and presence instils fear upon Varagarv and Ron Mei causing them to freeze. Ron Mei insisted Varagarv to stay still and calm down.
Powers and Abilities
Ron Mei seems to be a capable Light Bearer with enough skill to control four Lighthouses. She is seen wielding a yellow spear or staff while fending off Viole's escape team.
(To Anak Zahard, then Ship Leesoo) "Look at that Anak! Leesoo-ahjussi is staring at girls with a perverted gaze! Mmm~ as expected, ahjussi, you like 'em big and busty, huh?"