Otherwise or as an alternative.

(idiomatic) No matter what (implies an unspecified threat).

(set phrase) In no other place.

Synonym of anyone else

(set phrase) In all other places.

(set phrase) In any other place.

All other persons.

Some other person.

(informal) Something exceptional, out of the ordinary, unusual. / (informal) A person or thing that is outstandingly bad. / Another unspecified item, perhaps not yet known or decided upon.

Any other person.