Golem Metal is a anti-attack beyblade. Its meant to defend against attacks and than hit back the opponent.
Golem Metal has a 3x4 base design making it a bit smaller. Bit is Wide Spike which is defence bit that is meant to correct too much tilting and has great defence.
X Achilies is a homage to Z Achilies. Its blade features 2 sword and 2 shields, based on the original Z Achilies. Xtend is a Ratchet-bit that has the ability to manually change height. It has Low and Normal mode. Low mode is around 1 plate shorter and Normal mode is size of a regular beyblade (Check out Y-tastic Studio, he has the original design for the Driver version, i just converted it to my Rachet-Bit system)
Shark Ultra is an combination of all Shark beased beyblades in history (except shark scale). The long blue and orange contact points are based off of Sharkrash, fully yellow contact points are based off of Pisces, the ratchet-bit is Yard which is based off of Yard Slingshot, which is from Forneus, while middle purple part is based off of Shark Scale.
Wyvern Eclips is an attack type beyblade that features long green contactts that have high recoil and black contact points which are for upper attacks. Bit, Dash, is an Axel Pin with black freespin ring around it. Simplified explanation: Flat but if it had free spin black ring.