local workspace = game:GetService("Workspace")

local function createHighlight(character)

    if not character:FindFirstChild("Highlight") then
        local highlight = Instance.new("Highlight")
        highlight.Parent = character 
        highlight.FillColor = Color3.new(1, 0, 0) 
        highlight.FillTransparency = 0.5 
        highlight.OutlineColor = Color3.new(0, 0, 0) 
        highlight.OutlineTransparency = 0 
    end
end

for _, character in pairs(workspace.Characters:GetChildren()) do

    if character:IsA("Model") and character:FindFirstChildOfClass("Humanoid") then
        createHighlight(character) 
    end
end