Pokémon can be good for learning English if you already understand everyday conversations and want more consistent practice. The vocabulary is usually clear and direct, which makes the listening experience less intimidating for lower-level learners (more than 78% of the words come from common English vocabulary). Because the plot is fairly straightforward, learners can focus more on the dialogue than on figuring out the story. At an average of around 84 words per minute, the dialogue is generally manageable, though some exchanges require more attention. For learners around A2/B1, this can be a practical choice for getting used to faster spoken English.
