Just before Teru was a summoner, he was a pokemon trainer first and foremost. Even when Kyo was also a pokemon trainer with him, Teru utilized Breidablik’s power to harness the potential of his own pokemon, whereas Kyo strayed in focusing on fighting his own battles with transformations.
Teru also would later befriend a shaymin, and through many trials, victories and tragedies, the bond they shared allowed Papri (the shaymin) to utilize Breidablik’s power to fully realize a unique mega evolution to better aid and protect Teru. Together, they both make up Teru’s legendary alt, as both fully grew into themselves by that point.
By comparison, while Siegbert is not Teru’s only son to be involved with the world of pokemon, he was heavily focused on living up to the legacies of the world he was next in line to rule, but also the world where Teru’s power as a “tamer and summoner of beasts” originated: the world of pokemon.
In light of the new DLC pokemon, among which included Calyrex and Spectrier, Calyrex was a pokemon with powers also related to nature, and whom, when fully realized, could turn even barren wastelands into prosperous and fertile grounds, earning their title as the “King of Bountiful Harvests”. They also tamed one of two horses whom demonstrated traits ranging from fickle and temperamental, to potentially dangerous if unchecked, and their combined form as a horse-and-rider combo allowed both to fully realize their potential, but pacify the otherwise fickle horse pokemon.
All of these were elements reflecting the same potential Papri demonstrated with Teru throughout healing Nohr, and the relationship between Calyrex and Spectrier (on top of Spectrier’s visual design fitting better with Nohr) also mirrors not only the drastic shift Xander made strides on, whom Teru (among others) assisted in and/or inspired, but also Papri remaining true and low-key guiding Teru in his lowest and most volatile moments in his horrid and dark past leading up to the point he finally settled again to heal.
