Apl the packets that have an "Entity" prefix are to manage entities, if you want to spawn mobs use the "EntitySpawnPacket" and set the needed properties for it to be correctly rendered by the client
You can find all packets here. https://github.com/NiclasOlofsson/M...iNET/MiNET/Net/MCPE Protocol Documentation.md Note that some packets are RakNet packets, not Minecraft packets. For Minecraft packets, only those starting with "Mcpe".