Boss Battle has these relationships to other tropes:

parents kids shares a parent with:
Advancing Boss Of Doom
Bonus Boss
Boss Only Level
Duel Boss
Early Bird Boss
Final Boss
Final Exam Boss
Lone Wolf Boss
Marathon Boss
Mini Boss
Puzzle Boss
Sequential Boss
Wakeup Call Boss
Warmup Boss
Zero Effort Boss
You'll need to Get Known if you want to add or modify these relationships.