Answer:
I mean goodbye for South Americans.
I have a name that's not mine and no one cares about me in their prime. People cry at my sight and lie by me all day and night.
I begin and have no end. Eventually I will be the end of all that has begun.
An action done on mosquito bites
A dragons tooth in a mortals hand I kill I maim I divide the land.
If you can spot one of these eastern warriors, it means they're not doing their job right.