Andi Peel, 30, from Leicestershire, was diagnosed with a glioblastoma multiforme in January 2020.
Andi Peel, from Groby, Leicestershire, was diagnosed with a glioblastoma multiforme (GMB) in January 2020.
Ross Bland, 35, who is doing a Walk of Hope at Bradgate Park to raise money for Brain Tumour Research, said the 30-year-old was “like [his] little brother”.
The charity said it was grateful for his support.
Mr Peel began getting strong headaches in August 2019.
Mr Bland, a product manager, said: “It was devastating because he’s like my little brother.
“His brain tumour has taken over everything. It’s horrible to watch the way he has declined because of it.”