Backupslinger

1 clue
One who would've taken on Goliath if David had been unavailable?
Similar answers:
Ashslinger
Backup
Backupbrand
Backupcopy
Backupfiddle
Backupfile
Backupgenerator
Backuplite
Backupplan
Backupplane
Backupplant
Backupprocedure
Backupqb
Backupqbs
Backups
Backupsingers
Backupslinger
Backupvocalists
Backupwebsite
Backupxfiles