There is no such thing as a 'Sergal' in the Naruto anime.
There are no character with that name in Naruto
She appears in episode 46.
Kakashi does not appear as an ANBU in any of the naruto episodes though he does appear as an ANBU in a flashback in the first Naruto movie, Ninja clash in the land of snow.
It hasn't happened in anime, only in manga.
There are 220 Naruto episodes and 142(and counting) Naruto: Shippuuden episodes.
The first time he appears is episode 135 as a hologram
Minato appeared in Naruto Shippuuden Episode 168 when Naruto sprouted the ninth tail during the fight with Pain.
All of them there are 235 episodes of naruto shippuden
There are 220 episodes of the original Naruto Series, and 229 episodes and counting for Shippuden. Overall, there are 449 episodes in Naruto so far.
Well Or You haven't seen all Naruto episodes from the normal series or you don't know he will appear now most likely because he wishes to destroy konoha etc. or you have just started watching but he will appear more in the surrounding episodes 140 to 150 maybe more
There is a total of 220 episodes in the anime, "Naruto." But then, there is the sequel, "Naruto Shippuden." Naruto Shippuden has over 170 episodes currently. Hope I helped you!
who safe naruto in the final episodes