give a drawback to a hero that makes them unplayable I will start: pharah but when...

[Nicholas Klinger]

Widowmaker

 

[Rimini Azzedine]

Zarya dies at high energy

 

[Lanux Eisenwald]

When Mercy uses her Healbeam, she transfers her own health to an Teammate.

 

[Anna Vasiliadi]

mercy dies when she uses her rez

 

[Jake Dwyer]

Genji takes damage and gets stunned for 0.7 seconds if his swift strike makes contact with a hard surface

 

[Chris Catliff]

Torbs turrets deal damage to him instead of the enemies.