There is multiple gods (Good guy) but only one satan (bad guy).
Should we then change the name of the different gods to GOOD and rename satan BAD?
Therefore, we know its a battle of good between bad. lol
Christainity and other religions believe that gods are spirit and some religion even believe that satan is one of the gods including Bible passage that refer to devil or satan as "the God of this world"! Therefore satan and gods are not classified as bad or good but human beings are bad and good!