assistant,
helper,
help,
supporter a person who contributes to the fulfillment of a need or furtherance of an effort or purpose; "my invaluable assistant"; "they hired additional help to finish the work"
Verb
confederate -
form a confederation with; of nations
unify,
unite become one; "Germany unified officially in 1990"; "the cells merge"
confederate -
form a group or unite; "The groups banded together"