Uncanny Avengers (2015 series) #13

I quite like Ryan Stegman's art now he's toned down the lumpy anatomy.

The Cellar is the latest supervillain prison introduced in the current Amazing Spider-Man series. It was originally run by Regent so that he could use the villains' powers as his own. But now it's presumably just a prison.

Sebastian Shaw was a long-time foe of the X-Men, head of the Hellfire Club. But in Uncanny XM #534 Emma Frost erased his memories, and since then in Generation Hope and Avengers Academy he appeared to be a reformed character.
However in the post-Secret Wars world he seems to have regained his memories and his old personality. He was back with the Club in the new UXM#6, and was in the meeting of unprincipled businessmen in Mighty Thor #8.

Toad goes even further back as 1 of Magneto's Brotherhood of Evil Mutants in the original XM#4, mainly as someone for Magneto to kick. He continued a career of villainy but in the years preceding SW he allied himself with the X-Men.
In the post-SW universe he's been appearing in All-New XM where the Terrigen Cloud disrupted his life with the X-Men. He tried to kill the time-displaced young Cyclops hoping that would change the timeline for the better.