How many characters are there in Build A Blue Lock Squad?
The in-game Collection screen counts 214 cards. That is cards, not people — the same footballer appears in several categories with a different OVR, so the 214 cards cover roughly 136 distinct names.
Why does one card show more than one position?
The position label on a card cycles between the positions that card can play, fading between them. A single screenshot only ever captures one of them, which is why most code lists and wikis show just one position per card. Where we have observed several, all are listed.
What do the card colours mean?
Card background colour is the rarity band. From most to least common: green, silver, blue, orange, and red. Red is the rarest — only one card in the whole Collection currently uses it.
What is the highest OVR card?
The highest card in the Collection is 102 OVR, in the Pros / Master Strikers category. Most end-game squads are built from the orange and red bands, which sit in the 94–102 range.