Hundreds of aspiring politicians, including a masked costumed hero, registered on Monday for Thailand's first election since the 2014 coup, promising a colourful cast of candidates stumping for political parties both, old and new.Since the coup, the military has rewritten the constitution, clamped down on dissent and appointed allies across the bureaucracy.But recent days have seen echoes of Thailand's formerly rambunctious politics, with outdoor political announcements, campaign po