There are at least four bands and one podcast with this name, one Hungarian indie-rock/powerpop and one Portuguese alternative rock band from Aveiro. The third was based in the UK, playing alternative rock. Last but not least, SuperEgo was a moniker used by Stone Sour for a while, releasing one demo under that name.
These are photos from concerts where Superego played, so they may be of other bands that played the concert as well.
NOITES RITUAL ROCK 98 Aug 28 - 29, 1998 Porto, Porto, Portugal Uploaded by Rui Monteiro