Character Witness has these relationships to other tropes:

parents kids shares a parent with:
A Friend In Need
Chekhovs Gunman
parent child
A Friend In NeedGood Samaritan
''Chronic Hero Syndrome
''I Got You Covered
''Changed My Mind Kid
''Greater Need Than Mine
''Take Me Instead
Chekhovs GunmanChekhovs Army
You'll need to Get Known if you want to add or modify these relationships.