Thanos is a complex character in Marvel Comics. He's driven by a twisted sense of purpose and has the ability to pose a significant threat to the entire universe. He's famous for his purple skin and gold armor.
The Avengers have killed Thanos in certain comic runs. However, the comic universe is full of twists and turns, and his fate is not always straightforward. Different writers and storylines handle it differently.
Yes. Thanos' clashes with the Avengers in the comics led to the demise of some members. His might and strategic thinking gave him the upper hand in these battles.
In the comics, Thanos has managed to eliminate some Avengers on multiple occasions. His immense power and determination often pose a significant threat to the team.