Blackened

There are two distinct bands named "Blackened" in the available information.

1. **Blackened (Brazilian Metal Band)**: Formed in Curitiba, Brazil, this band was established by the end of 2013 with members Joao Wegher, Ulisses Nathan, Marcelo Martins, and Fernando Schwartz. They are known for blending heavy metal, Bay Area thrash metal, and punk influences. Their releases include "Third World Thrash," "Underground Attack," and their debut album "Truth Behind Destruction" on Witches Brew Records.

2. **Blackened (Hardcore/Metal Band)**: Based in Connecticut, this band features members of Hatebreed, including bassist Chris Beattie and original drummer Dave Russo. They combine traditional hardcore with metal, and their debut material includes the EP or album "This Means War".

Without more specific details, it's challenging to provide an accurate biography for just one "Blackened" based on the releases you've mentioned, as "This Means War" seems to belong to the US-based band, while "Truth Behind Destruction" and "Underground Attack" are associated with the Brazilian band.