John.

Mark 6:14-16
Now King Herod heard about this, for Jesus' name had become well known, and people were saying, "John the Baptist has risen from the dead! That is why miraculous powers are at work in him." . . .

Matthew 14:2
and said to his servants, "This is John the Baptist; he has risen from the dead! This is why miraculous powers are at work in him."

Matthew 16:14
They replied, "Some say John the Baptist; others say Elijah; and still others, Jeremiah or one of the prophets."

Luke 9:7-9
When Herod the Tetrarch heard about all that was happening, he was perplexed. For some were saying that John had risen from the dead, . . .

Elias.

Mark 9:11-13
And they asked Jesus, "Why do the scribes say that Elijah must come first?" . . .

Malachi 4:5
Behold, I will send you Elijah the prophet before the coming of the great and dreadful Day of the LORD.

Elijah.

John 1:21
"Then who are you?" they inquired. "Are you Elijah?" He said, "I am not." "Are you the Prophet?" He answered, "No."