Toggle TunnelBear from macOS console. Enable or disable TunnelBear VPN with CLI. Compatable with TunnelBear 3.8.0. Based on SH and AppleScript.

tunnelbear-toggle.sh

#/usr/bin/env bash
# Include this file in `~/.bash_profile` with `source /path/to/tunnelbear-toggle.sh`.

# Toggle TunnelBear activity.
#
# Example usage:
# `tunnelbear-toggle`
# `tunnelbear-toggle 1`
tunnelbear-toggle ()
{
    local enable=${1:-''} expectedState='';
    case ${enable} in
        '1')
            expectedState="Disconnected"
        ;;
        '0')
            expectedState="Connected"
        ;;
        '')
            expectedState=''
        ;;
        *)
            echo 'Enable argument must be empty / 0 / 1.' &> 2;
            return 1
        ;;
    esac;
    osascript  <<AS
set expectedState to "$expectedState"

tell application "System Events"
	tell process "TunnelBear"
		set toggleAppButton to (menu bar item 1 of menu bar 2)
		click toggleAppButton

		set mainWindow to (window "Window")
		tell mainWindow
			set toggleConnectionElement to (UI element 2)
			set state to (value of static text 0)
			if ((expectedState is "") or (state is expectedState)) then
				click toggleConnectionElement
				click toggleAppButton
			else
				log "Expected state is: '" & expectedState & "', but got: '" & state & "'."
				click toggleAppButton
				error number 1
			end if
		end tell
	end tell
end tell
AS

}

Mistyped "tunnelblick" with "tunnelbear" and ended up here 😆
If anyone is looking for tunnelBLICK solution then it's just easy (in case of 1 VPN configuration at least):

tell application "Tunnelblick"
	try
		set confName to get name of first configuration whose state = "EXITING"
		connect confName
		return "VPN on"
	on error
		disconnect all
		return "VPN off"
	end try
end tell