No. LG K9 Candy does not have the fingerprint scanner.
Yes, LG K9 Candy does have the removable battery.
No. LG K9 Candy does not have the fast charging support. But if you charge with the original charger and cable which is supplied, the phone gets charge very quickly.
LG K9 Candy has Qualcomm Adreno 304 GPU. Which has a frequency of 400 MHz.