Declan: You're Heisenberg.
Walt: You're goddamn right.
Walt’s transformation from meek chemistry teacher to kingpin has been a gradual process over the last few seasons, but in this moment it is close to complete. Declan doesn’t see a talented chemist when he looks at Walter; he sees the murderous drug lord Heisenberg that is capable of almost anything. His shudder briefly before he acknowledges Walt as Heisenberg is one of the biggest tells as to how fearsome his name has become. The really frightening part here is that Walter confirms that he views himself as Heisenberg as well.
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