Tagging

The tagging menu as seen in-game when pressing the assigned key, the middle square shows the current leader.

Tagging is a game mechanic that allows the player to change the leading member of the party quickly either through an assigned button or the menu. Different leaders can perform different actions, as seen deeper in this article. Every time the party tags, a photograph sound will play and a polaroid showing interaction with the current leader and the new leader will block the screen to prevent the player from seeing the change.
The tagging function becomes available during one of the first cutscenes of the Junkyard, and the whole area is considered a tutorial area for tagging.

Omori/Sunny

Omori's tag animation on the Dreamworld.

Sunny's tag animation on the real world.

While leading, Omori can cut branches, traffic cones and spider webs, Omori is also the only member able to see and interact with the keyboard keys scattered around the world, as well as talking to some creatures that only Omori can understand, such as the creatures found in the Deeper Well.
In Faraway Town, Sunny is also able to cut spider webs, during the start of the second night, and cones during the third day of the true route while in the Recycultist's HQ.

While traveling alone in some areas of Black Space, the tagging option is replaced with a "stab" option, allowing Omori to return to the entrance.
Sunny also has this interaction after confronting the Stranger on the hikikomori route, this stab option can only be accessed by the menu and, on such occasions, pressing the key assigned to the tag function does not have any effect.

Different from other party members, Omori does not have his tag explained during the Junkyard as stated above.

Aubrey

Aubrey's tag animation on the Dreamworld.

Aubrey's tag animation on the real world.

While leading, Aubrey can smash debris, pots and barrels found all over Headspace, destroying it allows access to some areas, with the possibility to give the party clams and items in the case of pots and barrels found in Sweetheart's Castle and Deep Well respectively. Tagging Aubrey is also necessary to do Aubrey's power-up event, where she gains extra 20 juice.

In Faraway, Aubrey is able to smash debris found in the Recycultist's HQ.

Aubrey is the first character covered in the tutorial, and will also tell Omori about the tag button:

* Kel: Awww, man! It looks like there's a big block of junk in the way!.
* Hero: You might even call it... a roadblock... get it?.
* Aubrey: Not to worry, everyone!  This big ol' block is nothing compared to my swing!.
* Aubrey: Hey Omori, you know how you can cut roots and traffic cones? Well, you're not the only one with a special ability around here!.
* Aubrey: I, for one, can smash large blocks out of the way!.
* Aubrey: Kel and Hero have their own special abilities, too... Although I'm not so sure about Kel... hehe....
* Aubrey: Just make me the leader by selecting tag in the player menu or by holding [tag key]! I'll get rid of this hunkajunk, easy-peasy!.

Kel

Kel's tag animation on the Dreamworld.

Kel's tag animation on the real world.

While leading, Kel can throw various balls while on "throwing stands" to solve various puzzles.

Tutorial

WIP

Other uses

WIP

Hero

Hero's tag animation on the Dreamworld.

Hero's tag animation on the real world.

While leading, Hero can use his charm to persuade NPCs, receiving discounts on mailboxes and the toll gates Gator Guys, opening Club sandwich after defeating Mr. Jawsum (only needed on the first one) or to receive items from various NPCs who are thankful for his actions prior to the events of the game, these are:

Mountain, Goosey and Hot Diggity Dog from the Train Station, rewards the party with a 4-leaf clover, 100 clams, and a hot dog respectively.
Smol, Lone Mole and Batzy, found in different locations of Otherworld, rewards with the friendship bracelet, donut and a butt peach soda respectively.
Box Mole, found in Sprout Mole Village, rewards with a sno-cone.
Bones and Tiffany Darling, found in different locations of Sweetheart's Castle, rewards with 301 clams and a mango smoothie respectively.
Mina and Ricoli Ravioli, found in Orange Oasis, rewards with a waffle and a cheese whell respectively.
Basket Case, Silker, Krispy, Wolf, Shamboo and Touchdown, found in different places of the Last Resort, rewards with a nerdy glasses, 440 clams, confetti, 143 clams, Dynamite and a watermelon juice respectively.
City Slicker, Jet Setter, Skull Crusher, Brick and one of the Seacows, found in different parts of the Deep Well, rewards with milk, cool glasses, poetry book, whole chicken and a combo meal respectively.
Hoagie, in the Club Sandwich, rewards with 5000 clams. (need confirmation, couldn't find map)

Like Aubrey, Hero needs to be the leader when doing his power-up event and gain his extra 20 attack.

In Faraway, Hero's able to use his charm to convince the Recycultists inside the HQ to join Sunny's party, necessary in order to reach their leader, the Recyclepath.

Still needs to cover the tutorial.

Gallery

Headspace

Faraway Town

Trivia

The background of the pictures in the dream world is the area's battle background where the party tagged. This interaction sometimes bugs out, leaving only an empty battle background without the polaroid.
During battle, the beginning text will change depending on who is the party leader.
As seen above, despite Kel only using his animation facing away from the camera in his tags, the animation exists for all sides.
On a similar topic, both Faraway Aubrey and Kel do not have other animations besides looking away from the camera.
WIP (Kel's different balls, may put in Kel's section)
WIP (cover Aubrey's pot/barrel event, will be also used in the locations pages)

References

WIP