Chameleon appears in the same relevant portions of and the same flashback in ToS 58 that Iron Man does, so:
CHAMELEON II/DMITRI SMERDYAKOV
…
SENSM '96 (43:7 - 45:7)-BTS
*TOS 58 (1-15:5)
TOS 58-FB
*TOS 58 (15:6-18)
TTA 62/2
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