ST20 - Yellow Charlotte Katakuri OP03-099-charlotte-katakuri fell off in popularity in OP09 and OP10, and there aren't any cards in Starter 20 that are meta-relevant to justify favoring it over other Starter decks
Artifact Creature Construct Uncommon Pete Venters 4/5 NOT LEGAL Standard NOT LEGAL Future NOT LEGAL Historic NOT LEGAL Timeless NOT LEGAL Gladiator NOT LEGAL Pioneer NOT LEGAL Explorer NOT LEGAL Modern LEGAL Legacy NOT LEGAL Pauper LEGAL Vintage NOT LEGAL Penny LEGAL Commander LEGAL Oathbreaker NOT LEGAL Standardbrawl NOT LEGAL Brawl NOT LEGAL Alchemy NOT LEGAL Pauper Commander LEGAL Duel NOT LEGAL Oldschool LEGAL Premodern LEGAL Predh Echo (At the beginning of your upkeep, if this came under your control since the beginning of your last upkeep, sacrifice it unless you pay its echo cost.) This creature attacks each combat if able
Eventually, trading for the rarest versions of these cards, including gold crown Arceus Ex, may become an option, but it isnt likely for now
But Kappa Cannoneer, Thought Monitor and Junk Winder are really only one or two mana
The remaining deck slots are filled with whatever cards fit the deck's theme and add to the overall synergy
The Pokmon Company knows that too, and regularly releases new Charizard cards featuring its various forms from over the years, including this Octobers Charizard ex Super-Premium collection