So there's a Moomin character (Little My) because we're in Finland and he loves them, there's Tom & Jerry because he loved those cartoons, a new-life mushroom from the years we spent together playing Super Mario Bros on the Nintendo classic.
But rather than list all the parts, you can see where this is going now, there's also Pokémon because he was obsessed with playing with the cards, memorizing all the evolution chains and stats/types.
When I was planning it was obvious there'd be a Pokémon due to his (continuing) interest in those and to me as a non-fan that's the most immediately-recognizable one.
Plus the colour works well with the colour-choices made in the other pieces. Although ironically the part I like best is the "naked" LEGO minifig. I like to colour him in with felt-tip pens every now and again, or draw a facial expression on him to reflect my mood when bored in meetings.