Reyn Erhardt  

Reyn Erhardt is a monster trainer who attends an academy for training monsters and trainers in Begiom. Despite having a slime named Pem-Pem as his partner, which is known to be the weakest among all partners, Reyn has demonstrated great creativity in battles using both strategic and practical methods. He was able to defeat even Erina F.Mireheburque's horse-dragon Kiel, despite being considered the weakest monster trainer due to his slime partner.