Season 2

The second season of Hey Arnold! consists of 26 quarter-hour episodes and 1 half-hour special, making it the shortest season of the series.

This season features Phillip Van Dyke replacing Toran Caudell as Arnold's voice actor. (Although Caudell remained in the show, providing the voice of Wolfgang.) Another major change is that starting with this season, the overseas animation services were handled by Sae Rom Productions.

Episodes

#	Segment A	Segment B	U.S. air date	Production code
27	The Big Scoop	Harold's Kitty	September 29, 1997	Unknown
28	Arnold Saves Sid	Hookey	October 13, 1997	Unknown
29	Save the Tree	New Teacher	September 22, 1997	139B / Unknown
30	Ransom	Ms. Perfect	October 8, 1997	Unknown / 130A
31	Monkey Business	Big Caesar	October 6, 1997	130B / Unknown
32	The High Life	Best Friends	October 22, 1997	Unknown
33	Longest Monday	Eugene's Pet	October 1, 1997	Unknown
34	Mudbowl	Gerald Moves Out	October 20, 1997	Unknown
35	Freeze Frame	Phoebe Cheats	October 15, 1997	Unknown
36	Helga's Love Potion	Gerald's Secret	September 24, 1997	Unknown
37	Steely Phil	Quantity Time	October 29, 1997	Unknown
38	Eating Contest	Rhonda's Glasses	November 3, 1997	138A / Unknown
39	Eugene Goes Bad	What's Opera, Arnold?	November 17, 1997	Unknown / 128A
40	Arnold's Halloween		October 27, 1997	Unknown

Trivia

• Despite only having 14 half-hours produced for it, this season aired 19 half-hours. The remaining 5 half-hours were Season 1 episodes that weren't aired earlier for some unknown reason.
• The episode "New Teacher" establishes that Miss Slovak has retired from teaching, but through deviations between production order and airing order, "Arnold Saves Sid" and several episodes held over from Season 1 were aired after that episode, creating continuity errors in the airing order.
• The more detailed/refined animation style from the last few episodes of Season 1 became the default style from now on.
• This season was ordered and began production before the series' first episode premiered on television.
  • Studios often do this with shows that they feel could be a potential hit, because if they don't order more episodes and keep the production crew employed, everyone will separate and find other jobs before the show makes it to the air. And if the show does end up being successful, the studio just lost their crew of hit-makers!
  • This also explains this season's short length. Like Hey Arnold!, Nickelodeon cartoons Harvey Beaks and The Loud House were initially picked up for a 26-episode first season, and later renewed for a 14-episode second season just before their premiere.