Bob, Bobkins, Boblet, Bobby, Bobcat

Kizzy, Wizzy
Ours are
Smokey- Mo, Mo-Mo (British Blue shorthair)
Winter- Wints, Annie Fan-tail (Long haired black and white)
Rainbow- Poink (multi-colour and white shorthair)
Rainbow is the latest cat to wander in and decide to stay, given the name by our Romanion neighbours where she lived briefly she earned the nickname by being a small but excited little head that pops up all wide eyed.
Latest in a line of Cats that have decided 'We live here' although there is a Cat-Flap so they come and go as they like I strongly suspect that she lived 2 doors away until they got a dog when their 2 cats were 're-homed' before the people were evicted and 'Rainbow' made her way back to her old area and lived by 'Cat-Flap raiding' for a few months before settling on us. She was a scrawny wee thing a couple of years back, looked like a kitten and very nervous but I think she was older (about 2 I'd say) making her around 4 now and has 'filled out' nicely'
Bit like Thomas did with you.