a person who helps accomplish a task
to be a help to one―help to do something―tend to do something―have a share in doing something―be instrumental in doing something―contribute to some result―conduce to some state―go far towards the result―do much towards the result―make for some state
to help a person out of a difficulty
someone who salvages
to look to one for assistance
to deliver a man from danger
自発的に助ける人
a person who has a poker face