Gundam Build Fighters Ep 23 - Gunpla Eve Complete Cameos

Gundam Build Fighters series is reaching its final episodes by now. In this series, the story is about Gunpla building and fighting, ultimately contest in Gunpla Battle Championship World Tournament. In Episodes 23, we comes to the festive before the final battle between Sei / Reiji Build Strike vs Meijin Kawaguchi's Exia Dark Matter. The episodes has tons of cameos, serving as tribute to the whole Gundam meta series, but surprisingly only tiny of Gundam AGE being references.

Here the almost complete screenshots showing all cameos identified by fans.
Gundam Build Fighters Episode 23 - Gunpla Eve cameos:

The Mechas:

the area was highlighted by two 1:1 scale of Char Zaku and RX-78

XXXG-01D Gundam Deathscythe battling in the side event

Deathscythe vs JMA-0530 Walking Dome

a model from the real Gunpla competition

CONCEPT-X 6-1-2 Turn X Gundam

Gyan Vulcan

MA-04X Zakrello

ZMT-S33S Gottrlatan

brand new Wing Fenice Rinascita from Italian Ricardo Fellini

which challenged by Kirara's Gerbera Tetra

Gundam King of Hearts from G Gundam

it's revealed that Miss Sazabi is Ayla Jyrkiainen's unit, will this unit being used in a battle? 

unit from real Gunpla competition in Gundam Breaker category

the main battle of Episode 23 is Sei's Mk-II Custom

vs Reiji's Beginning Gundam

introducing Crossbone X Maoh from Mao Yasaka

and Exia Dark Matter for the final round - controlled by Meijin Kawaguchi

The Character Cameos

Cariis Nautilus (Gundam X), Four Murasame, Rosamia Badam (Zeta) , Elpeo Ple (ZZ Gundam)

Renda de Paloma, Duker Iq (Victory Gundam)

Hathaway Noa + Quess Paraya (Char's Counterattack)

 Lichtendahl Tsery + Christina Sierra (Gundam 00)

Bernard Wiseman, Christina MacKenzie and Alfred Izuruha (0080 War in the Pocket)

Char Aznable and Lala Sune (MS Gundam)

The Frost Brother (After War Gundam X)

Katz Kobayashi, Kikka Kobayashi and Letz Kobayashi (MS Gundam)

Mineva Zabi and Haman Karn (Zeta Gundam)

Rain Mikamura (G Gundam)

 Cecily Fairchild + Dorel Ronah (F91) 

Carozzo Ronah + Nadia Ronah (Victory Gundam, building Rafflesia Gundam)

Kai Shiden + Miharu Ratokie (MS Gundam, building Guncannon and Dom)

Odelo Henrik + Warren Trace (Victory Gundam)

Domon Kasshu, Kyoji Kasshu, Raizo Kasshu, Mikino Kasshu, (upper building God and Spiegel Gundam)

Shinta,  Qum, and Henken Bekkener (below building Hi Zaku)

Hangelg Ewin, Üso Ewin and Muller Miguel (from Victory Gundam, building V2 Gundam)

Ayla + China, Gundam Kyrios and Sazabi, are they were Miss Sazabi based on?

Misaki + Mao, in the eye of Master Shingyo School, Crossbone Gundam X + SD Sengoku

and the ultimate cameos on the Gundam park from unconfirmed sources

you can read more on Gundam Wikia.

see cameos in other Episodes HERE

Episodes 11

Episode 13

Episode 14

Episode 15/16

Episode 17

Episode 19

Episode 23
Episode 24/25