Imagine a question and stream-of-consciousness explanation for which this is the answer: Ashley Jensen
Question: James McAvoy as Gnomeo, Lady Bluebury's son, Juliet's love interest (later husband), and a blue gnome counterpart to Romeo Montague. Emily Blunt as Juliet, Lord Redbrick's daughter, Gnomeo's love interest (later wife), and a red gnome counterpart to Juliet Capulet. Michael Caine as Lord Redbrick, the leader of the red gnomes, Juliet's overprotective widower father, and counterpart to Lord Capulet. Jason Statham as Tybalt, Gnomeo and Benny's arch-nemesis, and a red gnome counterpart to Tybalt. Maggie Smith as Lady Bluebury, the leader of the blue gnomes and Gnomeo's widowed mother, and counterpart to Lady Montague. Patrick Stewart as William Shakespeare who wrote Romeo and Juliet. Ashley Jensen as Nanette, a Scottish-accented plastic garden frog, Juliet's best friend, and Paris' love interest counterpart to Nurse. Stephen Merchant as Paris, a nerdy red gnome who was arranged to marry Juliet, and Nanette ́ s love interest; counterpart to Count Paris. Ozzy Osbourne as Fawn, a garden deer and Tybalt's best friend; counterpart to Peter. Matt Lucas as Benny, Gnomeo's impulsive and tall-hatted best friend, and Call Me Doll ́ s love interest; counterpart to Benvolio. Jim Cummings as Featherstone, a lonely plastic flamingo with a thick Spanish accent; counterpart to Friar Laurence. Hulk Hogan as Terrafirminator Announcer, an unseen person who promotes the Terrafirminator lawnmower on TV. Julie Walters as Ms. Montague, the elderly owner of the Blue garden whose face is not seen. Richard Wilson as Mr. Capulet, the elderly owner of the Red garden whose face is not seen. Kelly Asbury as Red Goon Gnomes; counterparts to Gregory, Sampson, Anthony, and Potpan. Dolly Parton as Dolly Gnome, the lawnmower race announcer, and Mankini Gnome ́ s love interest. Julia Braams as Stone Fish, a stone fish attached to the fishing line of the Fishing Gnome. In the end, it is seen being dragged by Gnomeo and Juliet's purple lawnmower. James Daniel Wilson as Fishing Gnome, a red gnome. Tim Bentinck as Conjoined Gnome Left, a red gnome. Julio Bonet as Mankini Gnome, Dolly Gnome ́ s love interest and a red gnome. Neil McCaul as Conjoined Gnome Right, a red gnome. Maurissa Horwitz as Call Me Doll, Benny's love interest. John Todd as Dancer.

Who played the frog in gnomeo and juliet?
Stream-of-consciousness: To answer the question, consider the following: Ashley Jensen as Nanette, a Scottish-accented plastic garden frog, Juliet's best friend, and Paris' love interest counterpart to Nurse.