Lawrence Sebald, also known as BlueCrab, is most well known for his freeware RPGs for the Sega Dreamcast, ljsdcdev and DCRPG. He also has ported the Sega Genesis emulator Generator to the Dreamcast as ljsdcgen. He is the current maintainer of KallistiOS. He has contributed a driver for the rarely used Dreamcast microphone peripheral, which he intends to use for the online mode in DCRPG.