I would say that The Doctor is an interesting case of someone remaining the same MBTI type: ENTP but changing his Socionics type each time he regenerates...
First Doctor: LSI
Second Doctor: ILE
Third Doctor: LSE
Fourth Doctor: ILE
Fifth Doctor: EII
Sixth Doctor: EIE
Seventh Doctor: LIE
Eighth Doctor: IEI
Ninth Doctor: SLE
Tenth Doctor: IEE
Eleventh Doctor: ILE? EIE?
