Gathered Intelligence on this Subject:

Hvalkatar’s lowermost ring of cells is formally registered as Block 5. This grouping, however, is more commonly referred to as the GraveRing due to its proximity to the Grave - the fighting arena at its center. One of the star attractions in this brutal battleground is the massive four-armed behemoth called Kraggnar.

Not always valued for his size and strength alone, Kraggnar was once an architect and builder of great cities on his home world of Quarvum. Despite the violent repetition he faces day after day, Kraggnar’s constructive ideology fuels him with the motivation to push ahead one brawl at a time.