A character's size can sometimes produce unpredictable and fun results in CSGO. Using cheats is the only way you can do it, since there is no actual command. On your console, type sv_cheats 1 to enable cheats. Bring up the cheat input box and enter ent_fire! To adjust the player's size, use setmodelscale [value]. If you enter 2 instead of "value," your character will be twice as big as it is by default. By setting the value to 0.5, the character will become twice as small. As an alternative, you can type resize[value]x to achieve the same results.