How do I make a "pseudo-character"?[Why -2?]

I've started to try to make a pseudo-character, and I started out by looking through free models. I haven't found a single free model which is a pseudo-character. I searched it up on google and found nothing but a snippet of code from crazyman32's twitter, so I thought it could be a start.

So far, I have this in a LocalScript in StarterGui:

local player = game.Players.LocalPlayer
function spawn_pseudo_character(player)
    local char = Instance.new("Model", game.Workspace)
    char.Name = player.Name

    local head = Instance.new("Part")
    head.Name = "Head"
    head.Anchored, head.Locked, head.CanCollide = true, true, false
    head.Transparency = 0
    head.FormFactor = "Symmetric"
    head.Size = Vector3.new(1,1,1)
    head.TopSurface, head.BottomSurface = "Smooth", "Smooth"
    head.CFrame = CFrame.new(0, 10, 0)
    head.Parent = char

    local torso = Instance.new("Part")
    torso.Name = "Torso"
    torso.Anchored, head.Locked, head.CanCollide = true, true, false
    torso.Transparency = 0
    torso.FormFactor = "Symmetric"
    torso.Size = Vector3.new(1,1,1)
    torso.TopSurface, head.BottomSurface = "Smooth", "Smooth"
    torso.CFrame = CFrame.new(0, 10, 0)
    torso.Parent = char

    local neck = Instance.new("Weld")
    neck.Name = "Neck"
    neck.Part0, neck.Part1 = torso, head
    neck.Parent = torso

    local hum = Instance.new("Humanoid", char)

    player.Character = char
end
spawn_pseudo_character(player)

Basically, what's happening is that my character glitches out and there are LOADS of characters being inserted into Workspace. This is a topic I couldn't find much on, so I really would love some help with this. I would just like to know how to make a very basic pseudo-character, then I could build upon it from there.

Thanks for reading.