Context: https://ttte.fandom.com/f/p/4400000000000117706
TS-01: Thomas
TS-02: Edward
TS-03: Henry
TS-04: Gordon
TS-05: James
TS-06: Percy
TS-07: Hiro
TS-08: Duck (CGI version, replaced Belle in 2019 due to Rebecca not existing in this AU)
TS-09: Diesel 10
TS-10: Spencer
TS-11: Toby (Updated in 2019 when Duck was reintroduced)
TS-12: Rosie (Does not get discontinued because Kenji doesn't exist)
TS-13: Emily (Updated in 2019 when Duck was reintroduced)
TS-14: Ryan and Skiff (Does not get discontinued)
TS-15: Stephen
TS-16: Culdee (Replaced Connor in 2022 following Culdee's TVS debut the previous year)
TS-17: Oliver (Replaced Percy and Rocky in 2021)
TS-18: Diesel (CGI version, replaced Gator and Marion in 2019 due to Yong Bao remaining a non-speaking character)
TS-19: Flynn
TS-20: Luke (Does not get discontinued)
TS-21: Skarloey (Reintroduced in 2018)
TS-22: Whiff (Replaced Hurricane and Frankie in 2020 due to slow sales of the latter, and Nia not existing)
TS-23: Ashima
TS-24: Daisy (Replaced Caitlin in 2022 due to Connor's discontinuation)
NOTE: Streamlined Thomas and Shooting Star Gordon remain seperate releases from the main lineup, akin to Gina and Lorenzo OTL.