There are many Matildas. The show has 3-4 girls in the role so the show has a refreshing feel to it. 

Kerry Ingram, Josie Griffiths, Adrianna Bertola, Eleanor Worthington Cox, Cleo Demetriou, Sophia Keily Isobelle Molloy, Jade Marner, Hayley Canham, Lucy-Mae Beacock, Chloe Hawthorn, Lara Wollington Elise Blake,Cristina Fray,Georgia  Pemberton, Lollie McKenzie Lottie Sicilia, Cara Jenkins, Tasha Chapple, Matilda Shapland^] Violet Tucker, Anna-Louise

 Knight, Lara McDonnell.Paige Brady,Gabriella Pizzolo, Ripley Sobo,Ava Ulloa, Tori Feinstein, Eliza Holland Madore,Brooklyn Shuck, Fina Strazza, Milly Shapiro, Bailey Ryon, Oona Laurence, Sophia Gennusa, Molly Barwick
Sasha Rose ,Georgia Taplin,Bella Thomas,Gabby Gutierrez, Mia Sinclair Jenness, Mabel Tyler.

There are 42 of them in all. And still more to come into the role