{"gt_parse": {"text_sequence": "boo ks pu blished by Ma rve l Co mics . The cha racter first appears i n \"The Si lver Surfer\" #3 and wa s introduced in the Marvel u niverse by Stan L ee and Jo hn Buscema, ba sed on Meph istopheles – a d emon character from the Faust legend, wh o has sometimes be en r eferred t o as Mep"}}