Yes, prior to arising as a Dharma Protector, Dorje Shugden manifested as many renowned and highly respected Lamas including:

• The Indian Mahasiddha Biwawa
• Duldzin Drakpa Gyeltsen (one of Lama Tsongkhapa’s closest disciples who built Gaden Monastery)
• Panchen Sonam Drakpa (an erudite scholar and debate master, whose philosophical texts are still being studied in the monasteries today)
• Tulku Drakpa Gyeltsen (a highly respected Lama who was often compared to the 5th Dalai Lama).