Adaptations for anime It's common, and sometimes, for animation studios to add characters that weren't present in the original work. Within the series, these characters can have a variety of roles: from simple cameos to becoming pivotal figures in the story, either in this new animated adaptation or when the creator ends up adding them to the original work. And in Twitter/Xthe user @siroumaru96 I didn't miss several of these characters, deciding to share an image showing 9 of them created for the anime, so now we'll share who they are and which anime they belong to.
Nine unforgettable anime characters that didn't exist in the original series

This image shared by the user @siroumaru96 in Twitter/X sparked debate among anime fans, and it's now possible to check out a selection of nine characters who weren't present in the source material but were created specifically for their animated adaptations. This way of working can be confusing for fans who haven't seen the original work, but some studios create these characters to add more plot to the story.
The image shared by @siroumaru96 It showcases a wide variety of characters from different series, and below we show them, each with their names, as well as the animes they appeared in. It's worth noting that among the characters we have some very important and beloved by fans, such as BardockGoku's father Dragon Ball any Selkie of My Hero Academiaas well as other more bizarre ones, such as deer that appear inside My deer friend Nokotan.
Hanako Hanazawa by Sazae-san

Selkie from My Hero Academia

Wataru Takagi from Detective Conan

Sanae Dekomori from the Chuunibyou demonstration Koi ga Shitai!

Jorge Saotome from Yu Yu Hakusho

King Batsubami from Kakegurui XX

Bardock from Dragon Ball

Meilin Li from Cardcaptor Sakura

Deer of My Friend Deer Nokotan

These are just a few examples of characters that didn't exist in the original work. They demonstrate the creativity of animation studios in bringing new faces to life that can enrich stories and captivate fans. Many have even been surprised by how well they are done. We can also see how some of them were key elements in their respective stories, so fans recognize them automatically.
The publication of @siroumaru96 generated a heated debate among followers of anime, which is why you'll find so many comments who didn't know these anime characters were created exclusively for the animated version. We also see people who expressed their appreciation for these additions that enrich the stories. However, some believe that changes like these can compromise the fidelity to the original work. So, while these changes worked in these cases, there are also characters that seriously affect the story's fidelity.
Furthermore, this image prompted hundreds of other fans to share their own additions to the list, and we can see how this practice of adding new characters to the story in animated adaptations is a widely used feature in anime and will continue to be used in the future. Some of the examples shared include: Sirius of My Hero Academiawho is precisely part of Selkie's crew or the world of Dragon Ball It is also found Brolywhich officially appeared for the first time in the films.