However, these names are actually incorrect. Well, mostly. As shown in the video above, the correct names are:
Frankie Solido, only appears in LEGO Racers 2 for PC, PS2, and GBA.
Baron Rosso, only appears in LEGO Racers 2 for PC and PS2, was replaced by Scooter from LEGO Racers 1 on LEGO Racers 2 for GBA.
Scooter, appears in LEGO Racers 1 (all platforms), and LEGO Racers 2 for GBA (replaced Baron Rosso on GBA).
A totally different character who also happens to be named Scooter. While he is not present in LEGO Racers 2 normally, his textures and model appears in the game files, and he can be placed in a world by using Cheat Engine. So he's effectively unused.