According to 2 Peter 3, who will come in the last days asking, "Where is the promise of His coming?"

Answer: Scoffers

In the last days scoffers will come, following their own desires and asking, "Where is the promise of His coming?"

“Most importantly, you must understand that in the last days scoffers will come, scoffing and following their own evil desires. “Where is the promise of His coming?” they will ask. “Ever since our fathers fell asleep, everything continues as it has from the beginning of creation.””— 2 Peter 3:3-4 (BSB)