Mew

Background
Mew is a Pokémon that has been featured in a multitude of animations that Ichi has made and has been featured in 15+ videos. Normally, a Mew would be pink, not blue, that's because the Mew that has been featured in her videos is the shiny variant of Mew. One notable feature that is present for Mew is that it is fluffier than the regular Pokémon design.

Origin Story
Not much is really known on why and how Mew is there with everyone, but all we know is that it was there before Mefus joined the group.

It’s also known that Mew was there during Strawberry’s days, as seen in various animations and drawings.

Trivia

 * A shiny Mew was going to be Ichi's OC, however, a last minute decision was made and that Mew wasn't adopted as her OC.
 * Mew does have a gender, however it is too stupid to know whether they are a girl or a boy, or non-binary.