Below is an instruction that describes a task. Write a response that appropriately completes the request.

### Instruction:
Which actors first appeared in episode "Blink" 1, 2, 3?

### Inputs:
table_name: table, columns: ['Character', 'Portrayed by', 'First appearance', 'Last appearance', 'Duration', 'Episodes']

### Response:
SELECT Portrayed by FROM table WHERE First appearance = "Blink" 1, 2, 3