Caught up to the story and went through posts with both blue_archive + toy_robot to add missing <key>_(robot)_(blue_archive) tags, and was wondering if I should remove their toy_robot tags, since the majority of posts with Key's robot form don't use it.
If so, it might be worth adding a line to aris_(maid)_(blue_archive)'s wiki page to spread awareness and request tagging Key instead of toy_robot. Unless, of course, other toy robots are shown, like post #6114870.