I have three sets of characters to introduce:
Women in a bright red hat
Rides a bike and has a very comically shaped and extremely red hat
He obviously jogs to get to work, has a rucksack in the winter, and in the summer has a newspaper tucked under his arm. Has a very strange "knees up / prancing / jogging" style
Middle Aged couple
He looks swiss, slightly portly. She is petite and asian. He talks to english to her, she just listens :-) Or at least, this is what I observe in the 20 seconds when I pass them!