

Initially, he saw Pokémon as tools rather than partners, but as the series progressed, he learns to genuinely care for them. However he's also a klutz, in the beginning of his journey, he tends to forget type-match ups (as seen in his first battle against Blue). In Pokémon Origins, Red's personality is shifted into being a well-meaning polite kid.

In Pokémon Black and White 2, he returns to human society to participate in the Pokémon World Tournament, and later The Battle Tree in Pokémon Sun and Moon Multiple NPCs such as his mom comment on how they haven't seen him in awhile. Silver, and never speaks to the player, even when defeated. In Pokémon Gold/Silver/Crystal and their remakes, he lives a solitary lifestyle as he trains on the top of the barren Mt. For further irony, Red's only coherent line in Pokémon Masters reveals that he deems words unnecessary as Pokémon can understand his commands without hearing him.

Even his female counterpart Leaf from the Gen 1 remakes is expressive and openly speaks. Pokémon Masters as well highlights how much his reserved demeanor ironically causes him to stand out against all the other playable characters who appear such as Rosa and Brendan, given how energetic they are when fully voiced. Therefore in the Original Games and their remakes taking place after Red and Blue, he is called out for being quiet by a few NPCs. Later games revealed however that unlike his counterparts, Red's actual personality is being stoic and not wishing to or needing to speak. In the Pokémon Games, Red is very quiet as with all other playable protagonists.

Brawl, he was voiced by Tomoe Hanba and by Michele Knotz in the English version. The latter is famous for voicing Kazuto Kirigaya from Sword Art Online, Rin Okumura from Blue Exorcist, Eren Jaeger from Attack on Titan, Masaomi Kida from Durarara!!, Shirou Emiya from Fate/Stay Night: Unlimited Blade Works, and many other anime characters.
