lonedefender
nounUK /ˌləʊn.dɪˈfen.də/
US /ˌloʊn.dɪˈfen.dər/
A lone defender is a person who protects something all by themselves.
The lone defender stood at the gate and kept the little village safe.
OTHER MEANINGS
2. In games, a character who holds a position alone against many attackers.
He picked the lone defender class and held the bridge by himself.
3. A person who speaks up for a cause when no one else will.
She was the lone defender of the old library at the town meeting.
4. A last remaining player protecting a goal or base.
The lone defender blocked three shots in a row.