Wrathful or fierce look on Dorje Shugden and Snowlion - From our side, it looks “frightening” because ego fears nothing more than confrontation with truth...
In Dorje Shugden's Sadhana, it says that
"In a manner, pleased with the practitioner,
Fierce expression destroying enemies and obstructers,"
I feel it means that if we keep our samaya well (or have kept it well in previous lives), Dorje Shugden will look happy with us but if we don't, he'll look angry. I find it interesting that i have friends who when they see Dorje Shugden's image for the first time, some will freak out yet others find him very warm and caring! Such a contrasting reaction to the same image and proof that it is our projections not Dorje Shugden which creates such emotions within us.