Felicia is a kind and caring individual. She is, in many aspects, a motherly figure, especially since she has a single daughter to look after and adores Sprig, especially when he is with her. While she hardly shows it, she does display some slight superiority over others such as when she would only shake Hop Pop's hand with a handkerchief. She can also be greedy as she pushed for her daughter's marriage to Sprig just so she and Hop Pop can get the benefits of a merger. Nevertheless, she is a generally nice person who loves holding a conversation.
Sylvia is a skinny yellow frog who, just like the other frogs in Wartwood, has four fingers and two toes on each hand and foot. She has a light green tongue and a small bit of red lipstick on and two giant round white eyes. Her most distinguishing feature is her red hair which is long and tied into a large braid while a crown of green flowers sits on her head. She wears a nice green dress that fits with the semi-medieval theme of Amphibia.
- It seems that Felicia is not married, meaning that she might be a widow or separated from her spouse.
- Like with many other characters on the show, her relationship with the Plantars seem to go back and forth between friendly neighbors ("Cracking Mrs. Croaker") to mild annoyance ("Girl Time").
- Her hair style, dress and the fact that she is barefoot, is oddly similar to that of Rapunzel from Tangled.
- While she displays a slight country accent, her daughter does not share this characteristic.