Hello Dracula 3: Magical Priest

Suggestions:

The Night Stalker Santo vs. the Strangler Karaoke Terror Graduation Day Grip of the Strangler

Grandfather meets his match when he meets Master Flying Squirrel. Master Flying Squirrel captures Grandpa and transforms him into a ghostslave. Tien Tien turns to grandfather old classmate to defeat the Flying Squirrel and absolve grandfather.