>>32584189Only downside to that is that you wouldn't be able to have a day version Lycanroc face off against a night version Lycanroc, since they'd both change into the same forms at the same time. Dichotomies and rivalries have been a bigger motif throughout Pokémon's history than form changes have been. Both have their place, with form changes gravitating towards depiction of how circumstances/seasons/cultures alter a creature or our perception of it (as with Deerling and Oricorio), or how a creature adapts to change (Rotom, Castform, Deoxys, and arguably Eeveelutions). Other Pokémon come in pairs or trios because they are inspired by balance between different ideas, or rivalries; since Pokémon is a battling RPG, rivalry tends to be a predominant theme; Hitmonlee/Hitmonchan, Zangoose/Seviper, Sawk/Throh, most pairs of box cover legendaries, etc. In Japanese folklore, "Rivalry" is frequently considered a source of motivation to better oneself, by working to overcome the opponent as a measure of one's own growth; BW spells this out a little more explicitly than previous titles.
