Royal Guards

Royal Guards is the slash ship between Royal Guard 01 and Royal Guard 02 from the Undertale and Deltarune fandoms.

Undertale
RG 01 and RG 02 are both members of the Royal Guard. Frisk encounters the two in Hotland, where the two attack the human. The two attack together with Team Attack.

When Frisk spares them, RG 01 confesses his emotions about him to RG 02 he says he “like likes him” which means he had a crush on him, and thinks he’s cool. The two guards then go out to get ice cream with each other. After this, they can be found at the top of Hotland, where they have bought all of the remaining Nice Creams.

If Frisk kills one of the Royal Guards, the other's attacks become stronger. It is also impossible to spare exactly one of them, similarly to Dogamy and Dogaressa.

Deltarune
The two appear in the Hometown at the end of Deltarune Chapter 1, wearing armor helmets along with matching trousers and flannel shirts. The two stand near the picnic tables by the lake. RG 01 enthuses over the scenery.

Fanon
The ship has gained support due to their in-game interactions. Since the two always appear together in-game, they are often portrayed together in fanart and other material. It is also the most popular ship for both characters, as the Royal Guards are rarely shipped with characters other than each other. As such, it does not have major rival ships. However, it is not as popular as many other ships due to the fact that the Royal Guards are no major characters in the game.

On AO3, it is by far the most written ship for both characters. However, it is only the second most commonly featured pairing in fanworks where the two appear, behind Alphyne. It is not among the top ships for the Undertale fandom in general.

Fandom
FAN FICTION