Executioner
There is at least 5 different bands with this name
1. Executioner from Florida was an early incarnation of Obituary, playing thrash metal comparable to early Metallica. Some demos and a split were released around 1985 with the songs Metal up Your Ass and Syco-Pathic Mind. Before deciding on Obituary, they changed their name to Xecutioner, so as not to get confused with...
2. Executioner from Boston also played thrash, releasing In the Name of Metal in 1986, and Break the Silence in 1987.