Alchemy is one of the best friends of Elyon and Cornelia. She has reddish-brown messy hair and big melow-blue eyes. She is in the same classes with them, and seems to be the least feminine of them all, however she is one of the most sensitive of the girls. Whenever she is upset, she gets cheered by listening to real depressing music. She has a small cat for a pet. In the second season, she gets worried over Elyon's super-long "vacation" and convinces Knickerbocker to start an investigation, causing a lot of trouble for the W.I.T.C.H. girls, who were believed by the authorities to have done something with Elyon. To stop all this, Elyon decides to go back and forth from Meridian to finish the school year. When Elyon leaves Heatherfield once and for all, Alchemy is very upset. She later appears in the Battle of the Bands, being the lead singer in a group called Alchemy and the Grumpers. Alchemy is shown to have a small crush on Caleb when she saw him at Will's surprise birthday party in season one.
- "Happy Birthday Will" (first apperance)
- "Divide and Conquer" (mentioned)
- "The Mudslugs"
- "C is for Changes"
- "H is for Hunted"
- "S is for Self"
- In Divide and Conquer, Alchemy's surname, Ethel, is revealed (possibly the only time this happens due to her being in so few episodes), when Cedric tries to force Blunk to tell him where the 'one with the red hair' is, Blunk refers to another vaguely red haired girl (who is neither Will nor Irma), stating that 'Ethel' (which is likely to be a surname given Blunk's speech mannerisms and him not knowing Alchemy that well) is in Denmark on holiday. Assuming there are no other red haired girls, this makes her full name Alchemy Ethel.
- Alchemy was meant to, along with several other supporting characters, have a bigger role in the planned 3rd season of W.I.T.C.H. However, since the third season was cancelled, it is unclear what kind of role she would have had, as well as whether or not she would have become aware of secrets such as the Guardians and Elyon's queenship.