Goombah (noun) (informal)
Strictly North American. An associate or accomplice, usually a senior gang member.
Origins unknown, possibly a dialect alteration of Italian compare ‘Godfather, friend, accomplice’.
“He’s the goombah, you’ll have to speak to him.”
Rampallion (noun) (rare) (archaic)
A ruffian, a villain, a rascal.
Late 16th century; earliest use found in Thomas Nashe (d. c1601), writer. Origin uncertain. Perhaps from ramp + -allion, perhaps showing alteration of rascallion by association with ramp. Perhaps compare later ramscallion, rapscallion, tatterdemalion.