YMMV / Phantom Planet

  • Broken Base: There are those who enjoyed the Grand Finale, others felt that it isn't satisfying due to the Executive Meddling of season 3 as well as Sam's reaction suggests she liked Danny better with powers. The fandom is so divided that authors of any fan fics set after the end of the series always clarify whether Phantom Planet happened or not in the continuity of their story.
  • They Wasted a Perfectly Good Plot: Part of the above comes from the movie introducing several ideas that aren't used even close to their full potential.
    • Over fifty years earlier, hero vs. giant-falling-space-rock-made-of-the-one-element-that-can-harm-his-species was the plot of the most popular episode of the first superhero series in history. It should be the easiest plot in the world to do right in a superhero series, making it doubly tragic that it generally wasn't, in this case.
    • Valerie (Danny's first love and one of his most prominent foes) learns his Secret Identity. Her reaction to this monumental discovery that the guy she began to fall for and the ghost she saw as her Arch-Enemy are one and the same is shown in a split-second clip of her smiling and clapping — no details, no elaboration, no depth. Her lack of role in this episode (not to mention the season) added up to a huge case of Aborted Arc.
    • A team of teenaged villains who hunt ghosts for money are introduced in the very last episode, when they would have made an excellent recurring foil or even Evil Counterpart (with some dark Biting-the-Hand Humor, as the last such team in ghost-hunting animation, who were part of the inspiration for Danny Phantom, were the good guys).
    • The episode also introduces ectoranium, the ghost-equivalent of kryptonite. Again, being the last episode, the endless possibilities this could be used for are left completely unexplored.
    • They never show how Dash and Paulina (both admirers of Danny Phantom) reacted upon Danny revealing his identity. Especially Paulina, who has a big crush on Danny Phantom, who's officially going out with the "goth geek".