What does the cryptic crossword clue "Monster looking down on you, so looking up! (4)" mean?

The definition is "Monster". The wordplay uses a reversal. reverse of ERGO = OGRE; definition: "Monster" The answer is OGRE.

Monster looking down on you, so looking up! (4)

Guardian Cryptic #23907 | 23 Down | 2006-10-26 flower