Strangers and freaks are characters who give quests to the protagonists in GTA 5. To attain 100% completion of the game you need to complete all the strangers and freaks missions available for Franklin. The only exception is “The Last One”.
Tonya Wiggins is a character in the Grand Theft Auto V, an old friend of Franklin. She gives Franklin 5 missions, the first of which unlocks random events, and the last one allows to buy the towing impound lot.