GLAD tanks aren't popular

I recently played a string of games against {{champion:3}} {{champion:20}} {{champion:54}} and i wanna know when do these champs lose? If anybody could give feedback insight on the mechanics of these champs, i would be grateful. If possible could you share some pro cons. feel like whenever i'm in a lane against any of these champ i cannot keep them from free farming/building full dmg/ and then nuke me and any other player on sight.
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