BUR #17612 has been approved by @nonamethanks.
create implication lunch_(good)_(dragon_ball) -> lunch_(dragon_ball)
create implication lunch_(bad)_(dragon_ball) -> lunch_(dragon_ball)
create alias launch_(good)_(dragon_ball) -> lunch_(good)_(dragon_ball)
create alias launch_(bad)_(dragon_ball) -> lunch_(bad)_(dragon_ball)
While Lunch isn't exactly the most noteworthy character, it's still surprising she never got individual tags for her Good and Bad versions (especially as of late, given how the two prominent Rule34 sites have each since made tags for 'em). It's fairly common to talk about them as Good Lunch/Launch and Bad Lunch/Launch respectively, hence the terminology used here. The format for the tags follows the precedent set by the Future and Xeno versions of characters.
While one could go "but you can just search for their hair color, so it's not needed", that doesn't account for monochrome images for both, and specifically in the case of Good Lunch, her hair isn't universally depicted as blue as official, going either purple or black at times in fanart. Her tag on Pixiv even calls her black-haired.