markus has the TMK virus, which unfortunately prevents him from sleeping (cuz the TMK virus sings the song Insomnia from Hypno's Lullaby in his head, trying to make him sleep so it can take over his body and cause harm, so markus must stay awake to prevent that from happening, it unfortunately ends up with markus having actual sleep Insomnia, but it's the only way he can control the TMK virus inside him). -look inside his midnight sprite script-
