With the official manga of One Punch Man continually changing and deviating from the web comic, fan animators of this series have to continuously play catchup. Luckily, creative fan animators make their own alterations and try not to make the fight scenes 1 to 1 with the manga.
In this animated movie edition by MMS Animator, we see Saitama take on Garou in his first transformation state. Because Garou is still evolving, we won’t officially know what other forms Garou will have as the fight progresses with Saitama. None the less, we love what animators like this do for fans of the series.
Season 3 has yet to be announced, so while we wait, we can enjoy animation from fan-creators of the series.