“Such is the nature of evil. Out there in the vast ignorance of the world it festers and spreads. A shadow that grows in the dark. A sleepless malice as black as the oncoming wall of night. So it ever was. So will it always be. In time all foul things come forth.”
Thranduil, The Desolation of Smaug
After Deku’s fight with Lady Nagant, it was revealed that All For One wasted no time in gathering a new army of followers after breaking out of Tartarus Prison. During his one-man crusade, Deku has fought and defeated a number of these new acolytes and was saved from the latest one by his classmates. All For One recruited these supervillains and sicced them on Deku in order to erode Deku’s stamina and willpower. However, I think these escapees are just the beginning.
Tartarus Prison was home to the worst of the worst when it came to supervillains. All For One also liberated inmates from half a dozen other prisons, resulting in ten thousand criminals rampaging across Japan. According to Hawks, even though thousands of supervillains are now free, only Lady Nagant posed a significant threat to Deku. However, as proven by Lady Nagant, All For One can compensate for these supervillains’ relative weakness by giving them additional quirks. Also, like Lady Nagant, All For One can cover his tracks by setting up an explosive failsafe to prevent his minions from leaking information.
However, I think the recent escapees are just the beginning. Like Doctor Ujiko and Gigantomachia, I think All For One has other powerful followers from his glory days that have gone into hiding after he was weakened by All Might. Now that hero society is crumbling and All For One has returned to power, it is the perfect opportunity for these minions to come out of hiding. This would raise the stakes even higher than before.
One thing to consider is who will ultimately become the true leader of these creatures of darkness. For the moment, these supervillains follow All For One, but that could change if the vestige of All For One loses control over Tomura Shigaraki. If Shigaraki overthrows All For One’s vestige and kills All For One himself, will the supervillains follow Shigaraki? Considering Shigaraki could reach 100% and become stronger than All For One by the time he wakes up, I think it would be easy for Shigaraki to exert his authority over these supervillains. One way or another, the formation of this new League of Villains will herald the next stage of the new age of darkness.