Mahavairocana is a big, important Buddha in Buddhism. Picture him like a really strong superhero, but with a peaceful heart. He's often depicted with a lot of arms and a shiny halo around his head, which means he has a lot of power.
But Mahavairocana doesn't use his power for fighting or hurting people. Instead, he uses his power to help people have more peace and happiness in their hearts. He teaches people how to be kind and compassionate, and how to understand the world around them.
Mahavairocana is like a really wise teacher who helps people learn about themselves and the world. He teaches people to be patient and to care about other people. So, when you think about Mahavairocana, think about a peaceful superhero who helps everyone be kind and happy.