Dan Lewis

Dan Lewis was a Liverpudlian companion of the Thirteenth Doctor, forming the third member of "Team TARDIS" after Yasmin Khan.

Travelling with Team TARDIS
Both Dan and Yaz were studiously operating the TARDIS when the Thirteenth Doctor sent a distress call about the arrival of the Flux. Dan then called out to the Doctor, saying that he and Yaz needed her help. (WC: The Flux is Coming...)

Psychological profile
to be added

Personality
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Skills
Dan knew, to some extent, how to operate the controls of the TARDIS control console. (WC: The Flux is Coming...)

Behind the scenes
to be added