Simplify the following text for a Grade 8 native English-speaking person.
Original: The only physical cast members are Tamzin Griffin , who plays the manic `` Funny Lady '' , and Jessica Smith whose face as a seven month old baby depicts the Sun .
Simplified: The only physical cast member is Tamzin Griffin , who plays the manic `` Funny Lady '' . The Sun is personified with the face of baby Jessica Smith , who is believed to have been around seven months old at the time of filming .