Sweetie was shown to be antagonistic, sneaky, greedy and spoiled rotten. She tends to fake being nice when around the princess and earl. She doesn't appear to be afraid of the PAW Patrol, as she has invited and mockingly told them to "catch" her after stealing the Barkingburg royal crown. She also uses her cuteness to trick others into getting what she wants. When Sweetie laughs, it ends with a snort.
She owns a robotic toy frog named Busby and two kittens that she considers her minions.
When her plans go wrong or she is punished, she tends to blame others for her mistakes, primarily directing her anger towards her toy frog Busby.
Sweetie is a smaller puppy (presumably around Skye's size). She has white fur, purple eyes, pink eye shadow on her eyelids, and a dark brown nose. She has pointy triangular ears with fluff on the inside and fluff on each of her cheeks.
Her casual outfit is a magenta tiara and a magenta collar with a pink "crown" attached to it. The 'crown' acts as a remote control to control Busby and it glows when activated.
Her Mission PAW uniform is a black suit with pink and white trim. Instead of a normal Mission PAW or PAW Patrol pup-tag, she wears crown pup tag.
Her pink vest is rose with lighter rose details like her Mission PAW uniform.