The bulk update request #9122 is pending approval.

create alias tobi (0) -> tobi_(disambiguation) (0)
create alias tobi_(character) (0) -> tobi_(disambiguation) (0)
change category tobi_(disambiguation) (0) -> invalid

Reason: "Tobi" is a common name, usually short for "Tobias". There are currently three pages worth of tags that begin with 'tobi'.

Note: tobi_(artist) is currently not suggested because it's consistently used for an artist who was last active years ago. That artist's posts either have no sources or are sourced to a defunct site.