Derived from the wiki:

"While Razzle is always ready to take center stage, his second half Dazzle isn't always so excited to be in the spotlight. These two may see things differently but they know they'll always have each other."

Razzle and Dazzle both have extremely different personalities, which represent their respective theatre masks.

Unlike his twin, Razzle is a rather excitable, friendly Toon. Razzle appears to be eager to spend time with the others, as well as enjoying the spotlight. He states "Couldn't be better!" when asked about how he's doing, which is reflective of his optimistic, happy personality.

However, despite being so different, neither twin fights, instead being open and accepting of each other in lieu their oppositions.

RnD can be either played by two separate people, or one person doing different voices. if you're looking for Dazzle, scroll up- the toons are all in alphabetical order.

His voice, like his brother, can be masc or androgynous. It should be cheery and exciteable.