The Reptilian skin would be a dead giveaway haha. Ultraman on the other hand could work it. 

"Name sir?" 

"Clark Kent, Daily Planet." 

*At the ACTUAL Daily Planet* 

Clark Kent (Superman, not Ultraman) sneezes, windows shatter.

EDIT: We all know the real reason Ultraman could get away with that flimsy of a disguise is because his real name is Clark Kent.