Danny Phantom

This is the 13th episode of the series, and the name of the episode is "13".

We see Sam's cat purse for a second time. The first time was in "Parental Bonding."

The name of the episode comes for the fact that 13 is a bad luck number and Johnny 13 has the power to create bad luck.

This marks the first time Danny's ghost sense goes off while in ghost form.

In this episode, Jack creates an invention called the "Fenton Genetic Lock" and he says that the only way to open the Fenton Portal is for someone in the Fenton family to place their thumb on the lock. However, the lock was destroyed by the end of the episode.

This is the second time someone's name is used in the title (13), which is Johnny's last "name". The first time was Gray (As in Valerie Gray in "Shades of Gray").

Insight Digital Description: Jazz falls for a ghost boy who may not have her best interests in mind.

Aparentally, invisible ghosts can see invisible ghosts. This was hinted in the scene where Johnny's shadow and Danny were in the thearter.

This episode marks the first time that Tucker is seen without glasses.

Johnny 13 is the first main character whose eyebrows are not black.

At one point, Danny calls Johnny, "Freakshow," which is coincidentally the name of the main villain in "Control Freaks."

Apparently, Danny must have gotten a new cell phone, since Jack destroyed his last one in "Teacher of the Year."

Nickname(s) Dash Gives Danny: Fentonio.

Look Hard: Star (who does not officially debut until in "Lucky in Love") makes three cameos in this episode. The first one is in the scene directly after Danny says, "This is awkward," Star can be seen sitting at a lunch table. The second one is in the scene where the kids are running away from the attacking bees: Star is the first one to run. Star's final cameo is at the "Amity Park Movie Plex," in the scene where Johnny 13's Shadow becomes weakened due to the light of the projector. She can be seen in the front row (however, her body is completely purple).

Look Hard: Nathan (who does not officially debut until "Reign Storm") makes three cameos in this episode. The first one is in the scene directly after Danny says, "This is awkward," Nathan can be seen sitting at a lunch table. The second cameo is in the scene after the camera focuses on the kids whose faces are covered in bee stings: Nathan can be seen in the crowd of kids who are standing on opposite sides of the walkway to the main doors of Casper High; Nathan is on the right side. Nathan also has a close up where Tucker says, "Suddenly, techno geek sounds like a term of endearment," and his face is also covered in bees. Nathan's last cameo is at the "Amity Park Movie Plex," in the scene where Johnny 13's Shadow becomes weakened due to the light of the projector. He can be seen in the third row (however, his body is completely purple), sitting next to the girl that was almost going to the carnival with Tucker, but changed her mind (whose body is also purple).

Jack reveals that Danny and Jazz are not allowed to bring unauthorized personnel into the Fenton lab and in "Memory Blank," this rule is hinted by the way Danny was in a hurry to get Sam and Tucker out of the Fenton lab before his parents get home.

This episode begins with Danny already in ghost mode.

This is the first episode in which the entire Fenton family appears in the opener.

This is the second time that the ghosts that Danny captured were accidentally released from the Fenton Thermos, the first time was caused by Tucker in "One of a Kind."

Johnny's motorcycle has the number "13" on it and so does the helmet that Jazz uses.

It is revealed that there are two gate doors leading to the Ghost Zone, the one inside the edges of the Fenton Portal shown in the Fenton lab and another one actually inside the Fenton Portal at the end of a hall of green swirling ectoplasmic energy.

After Danny Phantom captures Johnny 13 inside the Fenton Thermos, he transforms back into Danny Fenton. When he does that, the rings that appear vertically circles Danny's body and move horizontally in opposite directions. This same thing happened in "Teacher of the Year."

Look Hard: When Tucker drops all of his technology because of the ghost snake chasing after him, Tucker's laptop is shown and it has a Macintosh symbol on it, thus Tucker has a Macintosh laptop.

Danny reveals that Jazz wants to be a brain surgeon, although in previous episodes, it was implied that she wanted to be a psychologist.

Johnny 13 is the second ghost who has blonde hair, the first one was Klemper from "Fanning the Flames."

Sam has a purse with a picture of a cat's head on it, which seems to reflect her love for cats, which was mentioned in "Shades of Gray."

Apparently, the relationship between Tucker and Valerie must be over, since he was asking a different girl on a date.

The way how Maddie described the Fenton Anti-Creep Stick as "a regular bat with the word, 'Fenton' on it," is very similar to how Jack described the Fenton Thermos in "Mystery Meat," "a thermos with the word, 'Fenton' in front of it."

Johnny 13's boots look exactly like Skulker's and Ember's.

Johnny 13's skull chain is very similar to Skulker's, except Johnny's is green and not white like Skulker's.

Johnny 13's Shadow looks very much like Penelope Spectra (from "My Brother's Keeper") when she is in her "shadow" form.

According to Johnny, he has a last name, but it is not "13." He was given that nickname because he has a reputation in the Ghost Zone for being unlucky, hence the name, Johnny 13.

Running Gags: 1) Danny saying the same things as his parents 2) Johnny 13's Shadow causing trouble around Tucker, making everyone around him think he's bad luck 3) Jack and Maddie protesting about Danny spying on Jazz, then asking him to do it again 4) Johnny asking Shadow to attack/defend

Opener: Danny is fighting a ghost squid. It tries to shoot ink at him but misses. Danny sucks it into the Fenton Thermos. Sam calls Danny and says there's a ghost wolf near her by the Nasty Burger. Danny quickly stops it from eating Sam and sucks it in the thermos. Tucker then calls Danny and says there's a ghost snake by the park. Tucker is running, then falls and drops some of his electronic items. Danny stops the snake. At FentonWorks, Jack keeps opening the portal with the new Genetic Lock and ghosts keep flying out. In the Ghost Zone, Johnny 13 and Kitty are riding a motorcycle to the portal. Johnny sends his bad luck Shadow to keep it open. It stays open and they start through, but closes on Kitty's hair, trapping her in. She tells Johnny to get a girl to wear her stuff which she spread her energy into so she can reform around her. Johnny goes through the portal. He sees Jazz, smirks, and says, "Hello, new girlfriend."

This is the first episode to start by showing a billboard about Amity Park. The billboard says "Amity Park, a Nice Place to Live."

This episode was intentionally supposed to be the thirteenth episode aired, hence the name "13," but was pulled back to fourteenth, due to the last minute airing of "Fright Night."

Coincidentally, the two people who play Johnny 13 (William Baldwin) and Kitty (Chynna Phillips) are married.

Sam convinces Tucker to go Goth for a portion of this episode.

Title Screen Caption: "2-Wheeled-Terror!"

When Johnny 13 goes through the ghost portal, you can see Ember from "Fanning the Flames."

Featured Named Invention(s): Fenton Genetic Lock, Fenton Anti-Creep Stick.

Major Ghost Debut(s): Johnny 13 - His name is Johnny "13" because he's a ghost who causes bad luck. He also has a motorcycle which he prefers to use instead as his main article for transportation rather than flight. Johnny 13's Shadow - It causes bad luck on whoever Johnny wants it to and is weakened by bright light. Kitty - Johnny's girlfriend. She takes over a girl, then puts her spirit inside the victim. The victim is then trapped in a Purgatory-like place for the duration Kitty is in her body.

Jazz once again hints that she knows Danny's a ghost.

Nicknames Tucker gains in this episode: "Techno Geek," "Bad Luck Tuck."

Main Villain(s): Johnny 13.