What is the difference, if any, between 即使 and 無論？
They have different meanings.
即使 is the correct word in this case because it means &quot;even if&quot; or &quot;in fact&quot;.
無論 means &quot;regardless&quot; (as does 不管) and would be used in a sentence like 無論是誰畫的，etc. (regardless of who painted it, etc.).