A term that directly describes those of African descent that betrays their own or others. A mimic, infiltrator, chameleon, agent, sell-out.
Someone who disrupts the goals, progress and/or mission of Their/other groups
Marcus is a Tether because he pretended to be Jamaican to siphon money from a Jamaican non-profit organization
A member of a ethnic group that sabotages or undermines their respective group and/or another group (internally). A adversary of a ethnic group. Someone who opposes their/others interest. A infiltrator or participant who obstructs.
Benedict Arnold was a tether
Someone who has no value, A worthless individual, A non-contributor, Someone who is undesirable, A fool. A loser.
He cannot be served, he doesn't have anything to offer. He is a simp.