Browse through all the soldier skins that you can get for free in COD Mobile here!
These free character or soldier skins can be unlocked through limited time event and some other type of grind.
Special Ops 3 - Arctic
To get Special Ops 3 Arctic soldier skin for free you need to get it from the Lunar Festival limited time event.
Merc 5 - Yellow Snake
To get Merc 5 Yellow Snake soldier skin for free you need to reach Master 2 rank in Battle Royale gamemode season 3.
Outrider - Arctic
To get Outrider Arctic soldier skin for free you need to link your COD Mobile account to Call of Duty.
Conclusion
This are all the soldier skins or character that f2p players can unlock for free in Call of Duty Mobile. The list will update once the new free character come out.