Sai is not a bad guy he just do what his master or leader order him. and besides he had no choice but doing that coz Danzo put a seal on his Tongue so e could never speak something that Danzo told him or telling secrets .
Chat with our AI personalities
Is the Sai that you are asking is from naruto shipuuden? If yes, he is really not bad, he's one of the good guys on the anime.
Sai replaces sasuke on squad seven Naruto and Sakura team and yes hes nice he wants to be friends with them
its is manga volume 347 where konohamaru does his double guy techinque and it shows sai and sasuke presumably naked!
Sai does not wear glasses.
Naruto meets Sai right after returning from his mission to save Gaara. In the manga that would be book 32.