Dalek Section Leaders were Daleks in charge for scientific researches and Dalek operations on many planets the Daleks conquered. A Section Leader was tasked on Spiridon to experiment invisibility before it was killed by a Dalek Supreme for failing to meet its mission's objectives. (TV: Planet of the Daleks) A Dalek Section Leader was present on the planet Galacton. (PROSE: Mission to Galacton)

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