Esrael is one of the best hackers that this scene has ever seen. He is well-known for:
After another long hiatus, Esrael returned in 2018 to show his latest work, the Neto Boot Loader, a full replacement OS replacing the Firecore OS for both TecToy and AtGames systems that corrects emulation bugs within certain games, the bad sound emulation, and adds SRAM saving support to various games.
Esrael Sonic Hacking H.P. – Esrael’s Sonic hacking site (written in Brazilian Portuguese), which features hacking notes, tools, and his Delta series of hacks.