They are villains from Lady and the Tramp and Lady and The Tramp II: Scamp's Adventure.
Si and Am played Flotsam and Jetsam in The Little Mer-Maddision Marples-Macintosh
She is a eel
Si and Am played Kaa in The United State Book (2016) (disneystyle172 Style)
They were an female snake
- In Mittens and the Bolt, they will be played by Ursula and Morgana
- In Kira and the Jen, they will be played by Jellylorum and Etcetera