Kryptonite Factor has these relationships to other tropes:

parents kids shares a parent with:
Achilles Heel
parent child
Achilles HeelWeaksauce Weakness
''Fatal Flaw
''Drama Preserving Handicap
''Attack Its Weak Point
''Kill It With Fire
''Kill It With Ice
''Fantastic Fragility
''Why Did It Have To Be Snakes
''Logical Weakness
You'll need to Get Known if you want to add or modify these relationships.