Who is behind Helium Network?

Could you please elaborate on the identity of the individuals or entities responsible for the creation and operation of the Helium Network? I'm particularly interested in understanding the background and expertise of the key players involved in this innovative blockchain project. Could you also discuss their vision for the network and how they plan to ensure its sustained growth and success? It would be great to have some insights into their strategy for overcoming challenges and staying ahead of the competition in the rapidly evolving cryptocurrency landscape.