YOU SAID:

It imposes itself on the opponent with its enormous size. He categorically rejects the challenge with Pokèmon he deems weaker.

INTO JAPANESE

それはその巨大なサイズで相手に自分自身を課します。彼は自分が弱いと思うポケモンとの挑戦を断固として拒否します。

BACK INTO ENGLISH

It imposes itself on the opponent with its huge size. He categorically refuses to challenge Pokemon, which he considers weak.

INTO JAPANESE

それはその巨大なサイズで相手に自分自身を課します。彼は断固として彼が弱いと考えるポケモンに挑戦することを拒否します。

BACK INTO ENGLISH

It imposes itself on the opponent with its huge size. He categorically refuses to challenge Pokemon, which he considers weak.