How i can make Nextbots like GMOD and Nico's Nextbots For SRB2

How i can make Nextbots like GMOD and Nico's Nextbots For SRB2? Like This

Gmod Fun Mods

GMOD: Ultimate Nextbots Pack (111) / Review on 2D Nextbots +animated [Part 1] · Garry's mod – mods ·

GMOD: Ultimate Nextbots Pack (111) / Review on 2D Nextbots +animated [Part 1] · Garry's mod – mods ·

Nico's Nextbots Construct Horde Garry's Mod !!?

Nico's Nextbots Gmod

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How to make a nextbot for gmod (easy tutorial!) NEW