Castaneda agreed with it, adding that there could have been a lot of heartstrings being pulled.

The one who was the rudest and meanest to Viktor in season 1 was Diego.

Source:The Wrap.

The Umbrella Academy Season 4 Poster Showing Five Walking

However, as they grew older, the siblings grew apart as they dealt with their trauma.

The Umbrella Academy Diego and Viktor

Custom image by Debanjana Chowdhury.

Viktor Hargreeves in The Umbrella Academy

The Umbrella Academy is based on the comic book of the same name created by Gerard Way and Gabriel Bá. The Hargreeves — collectively known as The Umbrella Academy — were born with superpowers, and their adoptive father utilized their abilities. However, as they grew older, the siblings grew apart as they dealt with their trauma. They are brought back together after their father dies and Five returns from the future with grave news: The world will end, and The Umbrella Academy has to stop it before it happens.

The Umbrella Academy Elliot Page as Viktor Hargreeves using his powers

The Umbrella Academy