Ernest Prakasa as Ernest

Lala Karmela as Meira

Morgan Oey as Patrick

Kevin Anggara as Ernest (younger)

Brandon Salim as Patrick (younger)

Ferry Salim as Ernest' Dad

Olga Lydia as Ernest' Mom

Budi Dalton as Papa Meira

Ge Pamungkas as Willy

Lolox as Boss Ernest

Angie Ang as Irene

Regina Rengganis as Nadia

Andi Awwe Wijaya as Jaya

Adjis Doaibu as Abdul

Franda as Vania

Ardit Erwandha as Fariz

Fico Fachriza as Bowo

Amel Carla as Ipeh

Bakriyadi Arifin as Bakri

Muhadkly Acho as Dokter

Lia Atmadjaja as Audrey

Elkie Kwee as Koh Hengky

Henky Solaiman as Pemain Keyboard

Chika Jessica as Bidan

Jui Purwoto as Tukang Cilok

Debby Permata as Resepsionis Les

Marvell Adyatma as Young Ernest

Winson Silvo as Young Patrick

Fernandito Raditya as Young Fariz

Muhammad Rizky Alfiah as Young Bowo

Tasya Carla as Young Ipeh

Baharuddin as Young Bakri

Excell as Young Kiki

Arie Kriting as Preman 1

Bene Dion Rajagukguk as Preman 2

Arga Chandra as Guru SD

Pandu Winoto as Tukang Siomay

Navy Rizky Tavania as Teman Les Meira

Ence Bagus as Anak Punk

Asep Suaji as Anak Punk

Tretan Muslim as Kasir Minimarket

Anyun Cadel as Kenek Angkot

Sky Tierra Solana as Anak Kecil Minta Angpao

Yulianto Lin as Anak Cina Dipalak

Sanny Durant as Tukang Parkir

Gleen Ogang as Orang Gila

Intan Ulima as Cewek di Kost

Allan Yuliansyah as Asisten Bidan

Renaldy Rassofyan as Abang Bajaj

Guntur Pratama as Anak STM 1

Sylvester Aldes as Anak STM 2

Akbar Maulana as Anak STM 3

Dwika Putra as Asiung

Dyah Budi Lestari as Istri Asiung

Bob Prass as Guru Les

Mochammad Myrdal as Kakak Meira

Wahid Japung as Anak Wushu Dipalak

Adink Liwutang as Manajer Cafe

Haidi as Korban Tabrakan

Cipto as Korban Tabrakan

Dwita Amanda as Young Audrey

Armand Keylani as Bocah 1

Arya Putra Prawira as Bocah 2

Marcello as Bocah Cina

Joshua Tiger Wijaya as Anak Asiung

Gwensa Michelle as Baby Ernest / Baby Sky

Meira Anastasia as Orang Tua Bayi di Acara Imlek

Snow Auror Arashi as Bayi di Acara Imlek

Reno Aditya Kresna as Penyiar Radio

The Overtunes as Penampilan Khusus

Fitria Sechan as