I've grouped our characters based on the [url=http://overwatch.gamepedia.com/Heroes]four hero types[/url] of [i]Overwatch[/i]. Criteria in the following precedence are used:

[list]
[*]Adept or expert shield automatically classifies as tank
[*]Magic resistance, dodging and heavy armor contribute to tanking
[*]Non-destructive magic at adept or expert counts as support
[*]Crafts count towards support
[*]Subterfuge skills except marksman and sneak are also support 
[*]Attackers have decent mobility (athletics, acrobatics and sneak) and/or melee weapon skills
[*]Defense needs area control, destruction and marksman are primary examples
[/list]
Inactive/deceased characters are in italic.

[hider=Attack]
-Sadri
-Leif
-Sagax
-Roze
-Elmera
-Khazki

-[i]Trius[/i]
-[i]Kaliri[/i]
-[i]Relmyna[/i]
-[i]Tennant[/i]
-[i]Sylvanis[/i]
-[i]Sadann[/i]
[/hider]
[hider=Defense]
-Sevine
-Tsleeixth
-Dax
-Niernen

-[i]Lucex[/i]
-[i]Jonimir[/i]
-[i]Valen[/i]
-[i]Utu-ja[/i]
[/hider]
[hider=Tank]
-Solveig
-Do'Karth
-Marcel
-Piper
-Narzul

-[i]Jorwen[/i]
-[i]Orakh[/i]
[/hider]
[hider=Support]
-Keegan
-Rhasha
-Raelyn
-Bharzak
-Wylendriel

-[i]Almad[/i]
-[i]Vurwe[/i]
-[i]Fulrog[/i]
-[i]Felix[/i]
[/hider]