They are really close friends. They spend a lot of time together on the set of Soy Luna, and off-set too.
- Ruggerol (Rugge/ro and Ka/rol)
- Both are a main character in Soy Luna.
- Both are good friends with Agustín Bernasconi.
- Both have brown hair.
- Both went to Magic Kingdom in Orlando, Florida to sing "Alas" and "Un mundo ideal."
- Both went to Argentina, Chile, Colombia, Brazil, Mexico, Spain, Italy, Germany and France to promote Soy Luna.
- Both appeared in other shows before Soy Luna.
- Both speak Spanish.
- They both participated in the Radio Disney Vivo concerts in Buenos Aires, Argentina and Santiago, Chile.
- Both happened to get sick on the same day.
- Karol is Mexican while Ruggero is Italian.
- Ruggero was on the show Violetta, but Karol was not.
- Ruggero was born in 1993 while Karol was born in 1999.
- Ruggero is in a relationship but Karol is not.
- Ruggero has worked with Disney before Soy Luna, but Karol hasn't.
- They're just friends, since Ruggero is currently dating an actress named Candelaria Molfese, while Karol is single.
- In three words, Ruggero describes Karol as short, (always) smiling, and cool. Karol describes Ruggero as fun, creative, and talented. 
| To view the Ruggarol gallery, click here.