Kraata-Kal Clarifications?

If three Kraata-Kal existed, could they form a Kaita? How powerful are Kraata-Kal’s elemental abilities (compared to a Toa’s) and can he use more than one at a time? How intelligent is he compared to normal Kraata (or Shadow ones)? What kind of Kraata was he pre-mutation? What does he look like now? Did Teridax create his armor in a similar manner to how he would create normal Rahkshi armor, by creating another Kraata-Kal and throwing it into Energized Protodermis?

Changed to Ask Greg -Guy who has way too much free time