A European Union Intellectual Property Office trademark application has been spotted by LetsGoDigital for "Pikiu". The application was made at the end of January and comes under NICE classification 9, which includes chips and chipsets. It has been deduced that the trademark application has been made on behalf of Huawei, meaning Pikiu could be a new processor from the Chinese manufacturer.
https://www.notebookcheck.net/Huawei-could-be-working-on-a-new-processor-called-Pikiu.402621.0.html