Here are the possible solutions for now you see him now you don't clue
Answer
Clue
Relevancy
chameleon
Clue
Now you see him, now you don't
Definition
a small African lizard with a prehensile tail and tongue, also CAMELEON, CHAMAELEON
dirtyharry
Clue
1971 film with the tagline "You don't assign him to murder cases. You just turn him loose."
cameo
Clue
Now you see it, now you don't
Definition
to portray in sharp, delicate relief
mirage
Clue
Now you see it, now you don't
Definition
a type of optical illusion
poof
Clue
"Now you see it, now you don't!"
Definition
(offensive) an effeminate person, a homosexual, also POOFTAH, POOFTER, POOVE, POUF, POUFF, POUFFE, POUFTAH, POUFTER
neko
Clue
Rocker Case who tweeted "If a dude called me a 'cougar' I'd be more likely to kill him bare-handed and shit him out in front of his parents than fuck him"
ccrider
Clue
1950s-'60s hit with the lyric "Ah, you made me love you / Now, now, now, now your man is come"
ohsnapchat
Clue
"I see now. You mean that app where you don't get the picture for very long"?