The term 'Gaul Invader' refers to four historical figures who invaded the region of Gaul (modern-day France) during antiquity. ATTILA (6 letters) was a leader of the Huns, a nomadic people from Central Asia who invaded Europe in the 5th century. VISIGOTH (8 letters) was a Germanic tribe that invaded Gaul in the 5th century and eventually established a kingdom in what is now Spain. Julius CAESAR (6 letters) was a Roman general who invaded Gaul in the 1st century BC and eventually became the first emperor of Rome. The Huns (3 letters) were a nomadic people from Central Asia who invaded Europe in the 5th century and were led by ATTILA.