These "Tier 1 Surrogates" are the standard, pre-generated characters for use in organized play of Season 7 - "The Tomb of Annihilation". These are intended for print-and-play use. Typically, they are distributed in a single ZIP archive containing the separate PDF files.
Spellcasting character sheets are three pages each; non-spellcasting characters are two pages each. Normally, players would use their own "living" character - but for players that chose not to, these standard builds are available, all at 3rd level: